to this.

Experienced and professional animal trainer provide their insights in answering this question :
A. You need to see an eye specialist to determine what is going on. It could be protein losing neuropathy. Research that term and see if that sounds familiar for what is going on.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

One of the most obvious signs of trigeminal nerve sheath tumors in dogs is for one side of the head to be sunken in. Since the trigeminal nerve supplies the muscles of mastication, these muscles can become smaller and atrophy if the nerve is damaged.
Horner`s syndrome is a non-painful condition where the flight-fight innervation to the eye (sympathetic innervation) is interrupted. The condition usually occurs suddenly. The most common clinical signs of Horner`s syndrome are: Drooping of the eyelids on the affected side (ptosis)
Masticatory Muscle Myositis initially causes swelling of the muscles on the top of the head followed, a week or two later, by progressive muscle wasting (loss of muscles). The dog usually has difficulty moving its jaw, which causes pain and problems when picking up food or drinking.
Common clinical signs include pigmentation (brown discoloration), vascularization (blood vessel in-growth) and opacification (haziness) of the cornea. These corneal changes may lead to scarring and may progress to severe visual impairment or blindness in severe cases. Active disease may also result in discomfort.
Officially Called an “Occiput” This bony protuberance has an actual name: an “occiput.” It is a natural part of a dog`s anatomy and is there for a couple of reasons. Its primary purpose is to protect the bones of the dog`s skull and, in turn, his brain.
Occipital protuberance/sagittal crest.

This is a fin-like projection or knob-like bump on of the top of a dog`s skull. They are more prominent in dogs with long noses, like Dobermans or Collies. Generally they are normal skull bones, not tumors.

Typically, signs and symptoms of Horner syndrome include decreased pupil size, a drooping eyelid and decreased sweating on the affected side of the face. Horner syndrome may be the result of another medical problem, such as a stroke, tumor or spinal cord injury.
(Labrador Retriever Myopathy)

This inherited (autosomal recessive) condition is characterized by a type 2 muscle fiber deficiency and is now called centronuclear myopathy. Clinical signs are seen at < 5 months of age and include skeletal muscle atrophy, stunted growth, ataxia, and weakness.

The primary reason for a dog to exhibit a head tilt is dysfunction of the vestibular system. The vestibular apparatus is responsible for an animal`s maintenance of balance and the spatial orientation of the eyes, head, trunk and limbs relative to gravity.
Keratitis is a term used to describe inflammation of the cornea, the clear outer layer of the eye. Non- ulcerative keratitis describes an inflammatory process in the cornea. A dog`s eye is made up of several tissue layers and anatomical structures.
Distichiasis is a common condition in dogs where eyelashes develop in an abnormal location, emerging from the eyelid margin rather than the eyelid skin.
Symptoms of keratitis include: Eye redness. Eye pain. Excess tears or other discharge from your eye.
The size the lump will grow to depends on how much fat the lipoma stores, but they can become very big – in some cases, the size of your dog`s head.
Lipomas (fatty lumps)

Lipomas are the most common benign mass dogs can get; they`re often found under the skin of older dogs, and are more common in obese dogs. They tend to be round, soft tumours of fat cells that grow very slowly and rarely spread, so it can take up to six months before you see any change.

The occipital bone is an asymmetrical bone located at the caudal aspect of the skull and articulates with the first cervical vertebra. In most mammals, the occipital bone fills the entire nuchal region of the head. It also extends over the ventral or basal face and, generally, a little on the dorsal face.
In carnivores and omnivores, there is a ridge on top of the skull called a sagittal crest. The site of muscle attachment for the strong muscle that controls the crushing lower jaw, the sagittal crest is quite pronounced on opossum and fisher, and less pronounced on coyote, raccoon and otter.
Horner syndrome may result from any one of a variety of factors, including carotid artery dissection; the development of a tumor in neck or chest cavity, particularly a neuroblastoma and a tumor of the upper part of the lung (Pancoast tumor); the development of a lesion in midbrain, brain stem, upper spinal cord, neck, …
Horner`s syndrome is diagnosed clinically by observing ptosis (of upper and lower lids), miosis of the ptotic eye and demonstration of dilation lag in the affected eye, and anhidrosis on the same side as the ptosis and/or mitosis.
Enophthalmos in dogs is a condition in which the eye, within the cavity, is dispositioned. Typically, enophthalmos presents itself with the eyeball of the dog being positioned further back within the socket than normal.
Some signs of a stroke in dogs include a head tilt, circling, loss of balance, and unusual eye movements. If you think that your dog is having a stroke, don`t delay getting them to the vet for diagnosis and treatment. Treatment is mostly supportive, and it`s important to treat any underlying causes.
If just one of your eyelids droops, it may be a result of a nerve injury or a temporary stye. Routine LASIK or cataract surgery is sometimes to blame for the development of ptosis as a result of the muscle or tendon being stretched, though this is very rare.
A Reverse Horner`s syndrome, otherwise known as Pourfour du Petit, in theory, is the opposite, and comprises eyelid retraction, mydriasis and hyperhidrosis.
Outline: Centronuclear myopathy in Labrador retrievers is characterised by generalised muscle weakness caused by a defect in the mechanism by which muscle fibers are formed. Affected dogs may be unable to walk and exercise normally due to muscle weakness. They tire easily and may experience muscle tremors and collapse.
Lab hip dysplasia is a malformation of the hip joint where the head of the femur bone doesn`t fit precisely into the hip socket. Instead of fitting together normally and sliding smoothly, pieces of the joint (the ball and socket) painfully rub together.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. My 6 year old black Lab mix has one side of skull right behind eye is flattening, Other side looks normal. Shape of left eye is changed due to this.
ANSWER : A. You need to see an eye specialist to determine what is going on. It could be protein losing neuropathy. Research that term and see if that sounds familiar for what is going on.

Q. I have a 6 yr, old, neutered, male tabby cat. His left eye is dilated and his right eye is normal. No recent meds. He is eating and acting normal.
ANSWER : A. You’re describing something called “anisocoria”, which means unequal pupil sizes. Sometimes as cats age their iris (the colored part of the eye) atropies and we’ll see one pupil take on a slightly different shape or appearance. But there are some concerning problems that can cause anisocoria, including certain inflammatory diseases, diseases of the neurologic system (brain or nerves controlling pupil size) and exposure to some drugs (unlikely in this case since you mentioned that he hasn’t been given any drugs).

I’m glad that he seems normal otherwise, but see a vet so that the eyes can be examined and you can make sure this is not a serious condition.

Q. We have been treating our 5 year old cat for black bumps that we treated with Special Diet. These bumps grow over his body
ANSWER : A. If your cat has black bumps or other skin lesions forming that have not cleared up with preventive flea treatment or changes in diet, it may be time to request some additional testing as needed. Your vet can take a skin scraping of one of the lesions and send it to a Lab for various tests. One test includes growing any bacteria or fungus present, and then subjecting them to various medications to find which one is best to use. Other tests just look for certain growth patterns to determine if a fungus or bacteria is present which can be treated with oral or topical medications from your vet.

Cats can commonly have chin acne, which is the formation of little bumps that can be red or black in color and may sometimes break open and ooze debris. The cause of this acne is unknown, however one theory is that cats can actually get bacterial infections from rubbing their chins on plastic food dishes or dishes that are not cleaned often. Treatment may involve anywhere from none at all in minor cases, to use of wipes, creams or antibiotics for helping clear up any infection.

Q. We have a 3 yr old Weiner dog, she is having pus in her eyes, I took her to the vet he gave me derma vet ointment, used it as the doctor prescribed
ANSWER : A. If the pus really isn’t all that bad, and it’s just some discharge, your pup may benefit from a diet change. It could be that the food you’re feeding just isn’t right for your dog, and that’s okay! Dogs grow and change over time, and now that your dog is fully matured, a diet change may be in order. Try something like Taste of the Wild, maybe a grain free dog food, Orijen, or Ziwipeak. These are all really great food options.

If the pus is really bad, and continues to get worse, see your vet again and let them know what’s going on. Maybe you could try a diet change, and then see if there are any improvements.

Remember, you should always gradually change a dogs diet. By gradually, I mean you put a tiny bit of new kibble in with a bowl of the old kibble. Reduce the old kibble by just a few bits of kibble. Throughout the course of at least two weeks (or as long as you want depending on whether or not you want to finish off the old food) you slowly add more of the new kibble while removing some of the old kibble. This makes the process gradual, and won’t cause any tummy-upset in your dog.

Q. One eye is more red than the other. Last night he was pawing at it,today, he isn’t. Should I bring him to the vet?
ANSWER : A. Sounds possible that he had some irritation to the eye that is at least not itchy anymore. You can do either, having it checked now to confirm mild irritation, potentially due to debris or a topical irritant to the eye; or you can flush the eye with sterile saline eye wash (over the counter) using care not to poke or prod the eye and see if the irritation goes away on its own within the next 24 hrs. It has shown improvement already it appears, however if it is not cleared up and your pet seems irritated by it AT ALL, then it should be looked at by a vet and tested for a possible corneal scratch or ulcer. These can cause redness of the eye, eye discharge and pawing at the face. They are usually treated by prescription only topical eye antibiotic ointment and generally do very well after treatment.

Read Full Q/A … : Eye Problems in Cats

Q. What can be given to dogs to stop the brown draining around dogs eyes? I was told tetracycline would work.
ANSWER : A. Eye leakage is normal in some breeds of dogs, especially those that are more “bug-eyed” types. This eye leakage is just normal tears coming from the eye which can stain lighter colored coats. Unless there is an infection it does not need to be treated with antibiotics. Signs of infection usually include drainage that is thick or goopy and is yellow or greenish in color. Dogs with infections may also want to keep the eye closed, or may paw and scratch at it.

For plain tear-staining. Tear-stain wipes can be used around the eyes to remove the stain and bring the coat back to natural color. If infection is suspected, it is best to have your vet take a look at the eye prior to placing any medications in it.

Q. Our cat of six years has on two separate occasions has defecated on the living room rug and recently pee’d on the skirt of the Christmas tree.
ANSWER : A. Inappropriate elimination in cats is often a behavioral problem rather than a medical problem, so the first step is to have him seen by your vet to eliminate any kind of illness or condition as a cause for his eliminating outside the box.

If medical issues are ruled out, take a look at other reasons. Has there been a lot of unusual activity? Has you cat been left at home or boarded? Is the litterbox in a busy area? Has anything happened recently in this area to make him reluctant to use it again? Is there another cat, pet or person that is preventing him from getting to the box? Have you changed it from a hooded to an open box, or vice versa? Is it big enough? Have you changed the type or brand of litter? Is there something attractive about the spot he uses? Cats dislike disturbances to their routine and may act out to express their dissatisfaction.

The general rule is one litter box per cat in the household, plus one. That way each cat can have a place of their own to go in case the box is occupied or another cat has claimed it as territory. They should be scooped daily, if not more often and changed completely weekly, washed with soap and water only. You can offer one kind of litter in one box and another kind in another to see if there is a preference. I don’t recommend the crystals, it makes a hissing sound when wet that startles some cats and make them reluctant to use it again. The litter boxes should be located in a quiet, low-traffic area so that the cat can use them in peace. Make sure any other pets or people aren’t giving them a hard time around or in the litter box. It may take some investigation and experimentation to find your cat’s preference and accommodate him so that everyone is satisfied with the situation. And, when cleaning up pet accidents, don’t use any cleaner containing ammonia. This leaves behind a scent similar to urine.

Q. My 6 year old male neutered cat has suddenly developed an eye problem where one pupil is enlarged and covers the eye and the other one is pinpoint siz
ANSWER : A. This phenomenon is called Anisocoria (inequality of pupil size). There are several different causes of this including glaucoma, anterior uveitis, cancer of the eye, old age change, etc.
To help pinpoint what could be causing your pets condition I would recommend a thorough eye exam. Your vet may need to refer your pet out to an opthalmologist if any abnormalities are seen that need further treatment.