Why do dogs eyes turn red

Roses Are Red Baseball Uses a Bat According to All Known

Anything that damages a dog's cornea can cause red eyes due to irritation. For example, if a dog's eye gets poked with some weed or scratched by a persnickety cat. Corneal damage in dogs typically.. A virus, like canine distemper, hepatitis, or canine influenza may also cause redness in your dog's eyes. If a viral infection is the cause of your dog's red eyes, other symptoms will likely be more pronounced. Other Symptoms of a Viru Smoke, chemicals, artificial fragrances, pesticides and herbicides can all irritate your dog's eyes, making them red and sore. If your dog swims in the sea or a chlorine pool, that can do the same. If you're out and about, your dog's eyes can get red from smog, drift from crop-spraying, cigarette smoke and other toxins

A dog's eyes function a lot like our own. When normal and healthy, a dog's eyes will take in light and transform it into images, like a food bowl or favorite toy. If those eyes become red and irritated, though, they can cause major discomfort and possibly not function very well Porphyrins are also in your dog's saliva, which is why you may see the red staining around your dog's mouth, and also on the paws of dogs that tend to lick their feet. When the fur around the eyes stays moist, it can also lead to the growth of yeast and bacteria My little dog, 24 lbs., is blind in his left eye. He is a rescue and has been blind since we got him. Lately his eye has gotten a little bit red in the white part. Is there an eye drop I can treat him read mor Because this dog's eyes appear a dull red they lack tapeta lucida and the result is the typical 'red-eye' seen in humans due to the appearance of the blood vessels of choroid and the underlying the cornea. Any available light is used just the once - coming in, and not reflected back out again as is the case with the majority of dogs Light-colored dogs often develop a reddish-brown discoloration to the fur near the inner corner of their eyes. This occurs because tears contain a pigment called porphyrin that turns reddish-brown with prolonged exposure to air. In the absence of other problems, tear staining in this area is normal and is just a cosmetic concern

Epiphora can have a variety of causes and can be acute or chronic. The reddish stains appear when porphyrin, a pigment found in tears, builds up under the eyes 19,712 satisfied customers. dog: miniature..was playing outside and came in with his eye lid shut. my dog (miniature pinature) was playing outside and came in with his eye lid shut. When he tryed to open his eye i could see the brown in his eyes turned red

There is also a typical disease in certain breeds like Cockers known by the name of cherry eye that causes red eyes in dogs. The red is seen in the nearest angle to the nose, or even both eyes in the dog. The lacrimal gland of the third eyelid becomes inflamed and out of its usual place being exposed to the outside world Some of the possible reasons your that turn your dog's eyes red are relatively benign in nature, such as dog bloodshot eyes due to stress, there are a few possibilities that are more serious, such as glaucoma, uveitis, and Horner's disease Dogs can get red eyes from viral infections like distemper, herpes, hepatitis and the flu. Bacterial infections that cause red eyes include brucellosis, leptospirosis, and tick-borne diseases like ehrlichiosis or Lyme disease. Red eyes can also be caused by fungal infections. Fighting or Rough Pla Most young puppies and kittens have a blue tapetal reflection until the structures in the back of the eye fully mature at six to eight months of age. Color dilute dogs and cats, such as red..

There are many different causes of red eyes in dogs and can be as simple as allergies, or more serious such as glaucoma. There are cases of disease elsewhere in the body that can lead to inflammation of the eye Foreign matter, like dirt, grass seed, or a dog's own hair. Trauma. Parasites. Scratch or a cut on the cornea. Other problems can provoke symptoms that look like an eye infection, including.

Biblical Meat: European Stench / Molly Ring –Worm and the

My Dog Has Red Eyes: Here's Why and What to D

Ghilly. Mucus membranes and the whites of the eyes can turn pinkish red (or even quite bright red in some instances) when a dog is excited as a result of a rise in the blood pressure. This is not uncommon in young, excitable dogs. It sounds like his color returns to normal fairly quickly so it's simply the excitement that is causing it Focus especially on his eyes. If his pupils are dilated, he is stressed. If you can see the whites of his eyes to one side, he is stressed; this is called whale eye and occurs when the dog tries.. As mentioned earlier, dogs with red eyes do not always need treatment. You should first simply observe your dog's eyes. You should first simply observe your dog's eyes. If the redness becomes a regular occurrence or if it persists for more than a few hours at a stretch, then you should check your dog's eyes for any foreign particles In adult dogs, contributing factors can be broken down into three categories - medical issues, allergies and breed. Medical conditions. Eye staining. Medical issues that can lead to staining around the eyes include eye irritation, blocked tear ducts, eye infections (bacterial, viral or fungal) and trauma to the eye (e.g. a scratch or cut)

405 Posts. #8 · Feb 15, 2007. Abby, the boxer, gets red eyes when she's tired (hot pink lips too!) or stressed or playing hard, etc. Vet said all these things can contribute. She doesn't have droopy eyes at all but you can see the red around the rim It's common knowledge that red, bloodshot eyes are often caused by excessive dryness. Dry eyes in dogs can be caused by a number of factors. One common cause is a lack of tear production. This can be due to blocked tear ducts, or a condition known as immune-mediated adenitis

K9 Disc Thrills - The McNab Shepherd Alexander & Flora

What Are Some Possible Causes of Red Eyes in Dogs? - Dr

  1. ecraft big
  2. ator dog. In cats and dogs etc, the reason their eyes reflect light back is because by reflecting light back past their retina they can absorb more light and see better in the dark, with a trade-off in clarity because the reflected light is not focused. Logged
  3. Glaucoma is another serious eye illness that may be the cause of a red eye in your dog. However, a glaucoma red eye usually occurs with a conspicuous swelling of the eye because of the extra pressure placed on the eye. About 40% of dogs that develop glaucoma will lose their vision in the affected eye in less than a year, even with treatment
  4. ations can reveal signs that are suggestive of bacterial, viral or other systemic infections, as well as cancer, hypertension and diabetes. Dr. Catherine Nunnery, DVM, DACVO, a veterinary ophthalmologist based in Gaithersburg, Md., fielded our questions about some of the most common eye issues in canines. Q. My dog's eyes are red
  5. Red eyes in dogs are usually as a result of extraocular or intraocular inflammation or accumulation of blood in the eyelid, conjunctiva, cornea and other parts of the eyes. The redness can affect both or one eye depending on what the cause is
  6. Dog Eyes Swollen Shut Allergy Remedies. When a dog's eyes are swollen shut as a result of allergic reactions, the eyes will also be itchy, watery and red. To get rid of the swollen eyes from allergies, you will need to identify what allergen is causing the problem. Once you do, keep your dog away from it

Yeast infections occur when an overabundance of fungus is produced, which often results in itchiness and may cause a dog to lick or scratch the area. A dog's hair can take on a reddish hue as the result of a yeast infection thanks to the constant licking done to soothe irritation Red eyes occur when there are internal or external inflammations on the eyes, which causes a large amount of blood flow. Any condition that causes the enlargement of the eye's blood vessels will lead to red eyes in dogs. Even though the cause of that red-eye might be insignificant, please consult a vet if you want to make sure Porphyrins are also in your dog's saliva, which is why you may see the red staining around your dog's mouth, and also on the paws of dogs that tend to lick their feet. When the fur around the eyes stays moist, it can also lead to the growth of yeast and bacteria. Ptyrosporin, commonly known as red yeast also causes the familiar. Conjunctivitis is the broad medical term for inflammation of the conjunctiva. The conjunctiva is a thin membrane which covers the eyeballs and lines the eyelids. The conjunctiva is very important for lubricating and protecting your pet's eyes and when inflamed, can be very irritating to your dog's eyes Okay, as long as it is the pupil and iris area you have nothing to worry about. If the white part of the eyes are red, that is different. Have you ever heard of red eye in photos? Thats all this is. The pupil is a hole leading into the eye, sometimes in certain light, the pupil will look yellow or red in your dogs case

Dogs have a secret weapon. Anyone who has ever taken a picture using a flash knows human eyes reflect red. That's because all that we have behind our eyes are blood vessels. But instead of just blood vessels, dogs have a reflective surface. Brachycephalic dogs tend to have shallow eye sockets, which can cause the eyes to bulge. Sometimes the eyelids can't fully close , leaving the eyes exposed to irritants, dryness, and damage Signs a dog eye ulcer is healing. Before: When a dog first develops an eye ulcer, they will most likely experience intense pain on their eyeball. They will usually start squinting a lot in order to alleviate the pain. This in turn will cause your dog's eyes to become watery and most likely will develop a reddish color A Red Heeler does not walk around with eyes glowing at night. However, you aim a flashlight at it at night or take a flash picture, you are very likely to see shining eyes. There is a reason for this. The glow you sometimes think you see in your dog's eyes is light that is caught reflecting off the tapetum

A dog that has red eyes that are swollen shut could have an injury to the cornea. This could be caused by many things such as a foreign object getting into the eye and scratching the surface of the eye. A piece of grass, sand, and other environmental particles could be the culprit. Other injuries could be the result of a toy or other object. Symptoms of Red Eye in Dogs. In addition to redness of the eye, signs that may also be noted include: Pawing at or rubbing eye on floor. Squinting in light. Keeping eye closed. Cloudy cornea (surface of the eye) Watery tearing eyes. Red mass appearing from under the eyelid

Then squeeze a ribbon of ointment into the dog's eye. Gently open and close the lids for a few seconds to help spread the ointment or drops evenly. Preventing Eye Problems in Dogs. First, take a good look at your dog's eyes. The pupils should be the same size and your dog's eyes should be bright, crust-free, with white around the iris Why Do Pets Develop Tear Stains And What Can Be Done? Have you ever noticed how the fur beneath the eyes of your cat or dog can turn darker over time, perhaps becoming laced with streaks of red or brown? Eye discharge, more commonly referred to as tear staining occurs when your pet's tears oxidize upon contact with air and are absorbed into. Dogs with the Merle gene (heterozygous or homozygous) can experience various symptoms with those considered double merles having the most severe eye abnormalities. These include: Diluted or dappled coat. Varied color of the iris. A small eye (microphthalmia) Pupil that is off-center (corectopia) Cataracts. Blindness The most common causes of red eyes in dogs: * Environmental irritants and allergens: Like people, elements in the environment such as dirt, dust, and cigarette smoke can irritate your dog's eyes. Why senior dogs are particularly vulnerable to eye problems. 1-Some disorders are a result of aging and wear and tear. Cataracts, retinal degeneration, for example, are often age-related degenerative conditions. 2-Older animals have had more opportunity to sustain injury to the eyes, which can lead to long-term complications like glaucoma

Why Are My Dog's Eyes Red? 10 Causes of Red Eyes Dogs

Here are the top medical reasons why a dog's eye rolls in the back of his head and what you should do about it. 1. Your Dog Has an Eye Injury. A dog's eye might be rolling back in their head because of a possible eye injury. The eye injury could be to the third eyelid. A dog has a third eyelid that could cover part of his eye if it comes up Dogs with white coats and blue eyes can give off a red-eye effect in dark settings. The red-eye look is due to blood vessels in the eyes that reflect when exposed to light. Among my favorites are Miniature Schnauzers , Dr. Powell says. Their eyes tend to glow a beautiful turquoise color. Entropion is a condition in which part or parts of a dog's eyelids roll inwards. This causes the outer-haired portion of the eyelids to contact the surface of the eye and leads to irritation. Entropion often causes excessive tearing, eye redness and squinting. The condition makes dogs more prone to corneal ulcers, corneal scarring and dry eye

What to Do When Your Dog's Eyes Are Red PetM

Cherry Eye. This condition happens when the third eyelid gland prolapses and protrudes as a fleshy, red mass, resembling a cherry. Hence the name. This defect is most common in young dogs as well as cats, those under two years of age. Extreme Pain, Tumors & Other Condition Protruding eyes attracting irritants; Why is My Dog's White Fur Turning Yellow? The yellow color is the result of the pigment called bilirubin residing in the bile, which the red blood cells generate. If too much of this pigment is excreted or is not excreted at a healthy pace, many yellow fur spots become visible..

What causes the red staining under my dog's eyes

Entropion in dogs causes the animal's eyelids to turn in, which results in pressing the eyelashes against the eye and can lead to dog eye ulcers discussed above. This can be an excruciating. Tear stains on dogs look like streaks of dark black, brown, or red discolored hair under one or both eyes, says Dr. Jerry Klein, chief veterinary officer for the American Kennel Club (AKC). The stains are often accompanied by eye discharge, but not always

My dog is blind in his right eye

Whale eyes in dogs might sound funny, but usually, whale eyes are a sign of fear that shouldn't be ignored. Learn the signs and what to do about whale eyes Nuclear Sclerosis is a hardening of the eyes' lenses and is common in older dogs. It usually develops in both eyes at the same time and the eyes gradually take on a cloudy, bluish-grey appearance. Nuclear Sclerosis isn't painful and veterinarians say dogs should be able to adapt to any minor vision changes, meaning they should still be able.

Camera Flash Eyes - If Your Dog's Eyes Don't Glow, What

5 Types of Dog Eye Discharge (and What They Mean) PetM

Look into their eyes. If you can see your dog's eyelids peeled back and they show white, he/she is probably stressed. You may see a crescent shape of white as they look side-to-side, which is known as the half-moon eye.. Red eyes are also a sign that they may need rest. Their ears. Dog ears differ, but stress will make them react in one. Categories Dogs, Siberian Husky. Your Siberian Husky may have red eyes due to several reasons although it is not usually serious. Conditions such as Entropion, Crystalline Corneal Dystrophy, Dry Eye, Conjunctivitis, Cataracts, and Glaucoma have all been associated with the Husky in the past. The Siberian Husky can be defined and recognized. Dogs who have white coats and blue eyes often produce a red-eye glow in the dark. This red color is caused by blood vessels in the eyes that reflect when they are exposed to a light source. We see the blood vessels because these dogs don't produce any pigment in the tapetum lucidum at all This is the number one reason why a Pomeranian has clear, watery eyes. Most of the time, that's exactly what they are. If the fluid is brown, green or yellow, thick or crusty, a different health problem will be present. If you don't regularly wipe your dog's eyes with canine facial wipes, the fluid may dry and turn tan or red in colour Dry eye is more common in dogs that in cats. The gist of this article is not to scare you. If your dog or cat has diabetes, you should pay close attention to the eyes. If you have a vet opthalmologist in your town, please consider a consultation. We general practitioners do our best, but there's nothing like an eye doctor

Dog cataracts aren't the only ailment that cause a milky-blue hue to appear in dogs' eyes. Photo: Mark. Dog cataracts are a common cause of blindness in dogs. You'll recognize them without realizing it — those dogs have milky white pupils instead of black. Cataracts lead to loss of vision, so understanding the options is important Do not use shampoo on your GSD's eyes. Feed your GSDs a healthy, well-balanced diet. Conclusion. While most eye irritations in German Shepherds would go away on its own, some may be symptoms of serious eye problems or worst brain and nerve injuries. A regular visit to the vet will assure your GSD of its eye health Hi there, my bulldog is about 7 months old or so. He recently has started to turn pink, almost red, on the skin around his nose and mouth. He has been on the same food the whole time, so I didn't think it was from that. Can you tell me any reason why this would happen please These pooches often seem to have a pink to brown beard. This can happen to any part of your dog's body that he likes to lick or chew, such as the fur on your dog's feet or the fur around the eyes. While it's harmless for the most part, there are some medical conditions that could cause excessive staining in your dog's fur

Tear Stains Under Dogs' Eyes: What They Mean And What You

If your pet is constantly rubbing or scratching the insides of his ears, and they appear red and irritated, yeast may be the culprit. Most often, the yeast you see or smell is a sign of allergies due to rice, barley, wheat, corn or any of the grains in commercial pet food, according to Dr. Jeanette Thomason of The Whole Dog website What Causes Green Eye. Green eye occurs when light enters the eye of an animal at the same level as the eye. If your pet looks up at your camera when the flash goes off, the light from the flash can reflect from the back of their retina and this can cause a colored glow over their pupils. When light reflects off an object it does so in a sort.

There are many different causes of red eyes in dogs and can be as simple as allergies or more serious such as glaucoma or increase in pressure in the eye. Other potential causes could be an infection inside the eye, an ulcer on the outer portion of the eye that could be due to a trauma event, low tear production, or an infection either inside. If you're wondering why your dog's eyes are red, we are going to provide details here about some of the common reasons for red eyes in dogs which will help you in proper diagnosis as well as treatment of the problem. build up of pressure inside the eye known as glaucoma and diseases affecting the eye socket. The eyes turn red when sclera. Conjunctivitis, also known as pinkeye or red eye, is as common in dogs as it is in humans. It's an itchy inflammation of the tissue that coats the eye and the lining of the eyelids, called the conjunctiva. Conjunctivitis can happen at any age, by itself or because of another eye problem

What can cause a dogs eyes to turn red suddenly, trauma

In eyes lacking pigment the eye reflection is red. Some dogs will have one of each. This layer is responsible for eyeshine in cats as well. This is the eye of a black tri. The iris is dark amber and the choroid layer is well pigmented. This greenish reflection is the norm in most dog breeds and wild canids With regard to observing dog body language, pupil dilation can provide vital clues as to the dog's emotional state. Dilation of pupils can occur in low light conditions to assist with vision by allowing more light into the eyes. In other instances it occurs as an involuntary response due to the sympathetic nervous system being activated Dogs with seasonal allergies may lick their paws and legs, the saliva staining the fur red. Then when brownish discoloration develops in the moist fur, the yeast infection sets in

Below are some things that many dog lovers may not know about the death of dogs. 1. Dogs die with their eyes open. It takes active muscle control to close the eyes. (The same is true of humans.) 2. Many dogs hide when they are sick. This is a defensive mechanism to prevent predators from spotting them in a vulnerable state Do your dogs or cats dogs have red eyes and you are wondering why redness in your lovely pets? In this article, we are going to discuss the causes, symptoms, cures and remedies for red eye in dogs and cats.I know this sounds a bit offbeat, however, if you love cats or dogs and they are your favorite animals, why do not you spend some time and know more about red eye in dogs and cats If you take a picture of a dog, the reflection will appear yellow or green, in most cases. If you are seeing different colors in the eyes of your dog, here are some possible causes: The tapetum lucidum may not be present in an eye that has a blue iris (pupil). This is normal and causes no harm. The tapetum lucidum may be more obvious in one eye. These are a little rarer as most animals will have yellow or red eyes in the dark. Dogs. Docs can have green eyes in the dark. This cute little golden retriever pup certainly looks adorable with the glowing eyes in the dark. When you do see glowing eyes in the dark it will often be a cat or a dog

What Causes Red Eyes in Dogs - 4 steps - oneHOWT

Aussie's get red eyes for lots of reasons. Allergies leaf mold is 1. Tired (exhausted), dust, and irritants in the air, cleaning products, they have a lot of the same allergies humans do. Redness in lower eyes of young dog The rusty stains under your dog's eyes make her look a little sad, but more importantly, they may signal a health problem. Her tears naturally contain a red-brown pigment called porphyrin. A variety of health issues, from food allergies to eye disease, can cause excessive tearing that builds up stains on her fur.. A dog with red eyes requires special attention and immediate treatment, as your pet might have an infection. The most common eye infections in dogs are: conjunctivitis, keratitis, uveitis and cherry eye. Allergies may also cause red eyes. Red eyes in dogs are often swollen and itchy Glass eyes are not an attraction that will help you win a show, work better, run farther, hunt longer, or have a stronger influence in the complete makeup of the dog. Glass eyes are just aesthetics. They are pretty but have nothing else to do with the physical makeup of the dog. Glass eyes is the result of the Merle gene at work within the dog

What Makes The Whites Of Your Dog's Eyes Red? Cutenes

Common Eye Problems In Old Dogs. Just as people have eye problems that develop with age, so do dogs, and they start to require more dog eye care. The most common eye problems of old dogs are cataracts, glaucoma and nuclear sclerosis. Blindness can develop from the first two conditions, and from retinal degeneration with age Red eye is thought to be caused by the immune system, causes are not well known, but it may be consecutive to another eye problem, and it may reflect a health problem. So, It is recommended to take your pet to the veterinarian as soon as possible to avoid unnecessary complications. The primary causes include: internal Hemorrhage of the anterior. The dog's eyes may remain open during a seizure, but he won't be able to see anything. A dog won't be able to control his bodily functions at this time and it's not usual for a canine to drool, urinate, empty his anal glands and even defecate. The clonic phase of the seizure is when a dog unconsciously begins moving rhythmically

Sugartown Publishing - PUBLISHED TITLESTo order, please

Red Eye in Dogs: When to Go to the Vet Canna-Pet

The dog's eye has a reflecting layer, called the tapetum lucidum, which intensifies available light, giving the dog an advantage during dusk or dawn, the prime time for hunting. Because dogs have two eyes, they have binocular vision. Binocular vision is the area within a dog's total vision field that overlaps, providing it with the depth of. Pododermatitis is an inflammation and/or infection of the foot. It is not a specific disease but rather a descriptive condition that can result from a number of medical problems. Because the prognosis and treatment can vary greatly, depending on the underlying problem, your veterinarian will likely run a thorough checkup to locate the cause. Causes of pododermatitis may include 1 All young puppies are born with varying shades of blue eyes. Some appear to be a little more green-blue while others will have blue with spots of brown. Within about 10 - 12 weeks your puppies eyes will mature and begin to turn to their new permanent color. Brown is the default eye color for mature dogs Dog moms and dads can sometimes detect cataracts by looking into the dog's eyes. An eye afflicted with a cataract appears bluish-gray, opaque, and cloudy. As the dog ages, his eye lens may also become clouded due to age-related changes, which is a process known as nuclear sclerosis


Why do dogs get blue, not red, eyes in flash photos

  1. Why Do Dogs Have Pink Noses? Dogs come in all shapes, sizes and color variations. Instead, liver will turn the coat brown, the eyes amber and the nose color will range from brown to pink. In conclusion, a red, brown or even white-coated dog with amber eyes and a liver or pink nose is carrying this gene
  2. From eye boogers to corneal ulcers, dog eye problems must be evaluated and treated with a combination of conventional and holistic medicine. Sometimes surgery is the right way to go, while other times homeopathic or herbal treatments are best. If the eye problem is caused by an underlying disease, acupuncture is often effective. Some dog eye [
  3. Dog Eye Problems: Ectopic Cilia. Ectopic Cilia is similar to Distichiasis, but instead, the hair grows from the inner surface of the eyelid. This condition can be very painful for your dog and can also cause corneal ulcers. Dog eye problems often manifest as squinting, tearing or discharge, ulceration, clouding of the cornea
  4. Dogs, cats and most nocturnal animals have a special layer of cells in or behind their retinas call tapetum lucidum which acts like a mirror in reflective light and helps them see better at night. Eye shine or ghostly green glow happens when the camera flash or any light reflects off the retinas and bounce back into the camera
  5. Red spans the gamut, too, from a shimmery golden tone with deep orange or chestnut highlights to rusty or liver red. Many breeds from all the groups and sizes, such as toys and working dogs, can sport this eye-catching ginger coloring. Here are 16 red-coated dogs to consider if you're looking to add an eye-catching pup to your family

Red Eye in Dogs - Symptoms, Causes, Diagnosis, Treatment

  1. Owner Cures Itchy Red Dog Skin For Good, Here's How She Did It. Lori Kavulish was sick of seeing her sweet Duilius suffer from itchy red dog skin. Yet year after year, Duilius (who goes by Duly) would rip and roll his way around the yard and end up with skin infections that itched and irritated him to no end
  2. Also known as Pink Eye - this is one of the most common dog eye problems and the primary symptoms are red, irritated, inflamed eyes. The area around the eyes may be swollen as well, and often there will be either a watery, or thick, discharge
  3. Trauma: Anything that irritates the eye can result in excessive tearing and eye drainage. Minor irritants or allergens may cause a dog to rub at his eyes, furthering the irritation and inflammation. More serious eye injuries can occur if something sharp scratches the eye, like an animal claw or object. If you suspect your dog has an eye injury, be sure to bring him to the vet as soon as possible
  4. This buildup of the natural fluid within the eye is characterized by red and cloudy bulging eyes is not life-threatening, according to Pet Wave. It can, however, adversely affect a dog's quality of life. It is caused when the exchange of the aqueous humor fluid between the eye chambers is out of balance

1) The eye that appears red lacks a tapetum lucidum and the result is the typical 'red-eye' seen in humans due to the appearance of the blood vessels of choroid and the underlying the cornea. 2) The dog has different crystalline or cellular arrangements in its eyes causing the reflected light to correspond to the different wavelengths Yes, Frenchie eyes do change color. When they are born, their eyes will initially be blue. Around 10 weeks, their eyes will then start to change color to brown. The exception to the rule is Blue Fawn Frenchies who can have blue or green eyes in adulthood The glow of red human eyes is a little like the glow of the moon. It's the reflected light of a far greater light source. The flash of a camera travels through the pupil and hits the back of the. In dogs and in humans, hair goes gray for the same physiological reason. Essentially, the cells that create brown or blonde or red hair color start to slack off, and eventually die. Your body.