Cerebellar hypoplasia (non-human)
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Usually symptoms of cerebellar hypoplasia can be seen immediately at birth in cats, but sometimes can take two months or so to become apparent in dogs. Cerebellar hypoplasia causes jerky movements, tremors and generally uncoordinated motion. The animal often falls down and has trouble walking. Tremors increase when the animal is excited and subside when at ease.
There are several bacterial infections and viral infections such as feline panleukopenia, caused by feline parvovirus, that can result in the disorder in both cats and dogs. However, the disease can also be caused by malnutrition, poisoning, injury or general accidents during development in the fetus.
The disease does not get better or worse with age, but the cat or dog can usually learn to somewhat compensate for it and should have a normal lifespan. Afflicted animals can, in theory, lead a fairly normal life if special considerations for the animal's disability are taken by the pet's owner. However, the secondary complications, such as accidental injuries that occur as a result of having the condition, may lead to a shorter lifespan. Some affected animals are also euthanized due to the severity of the clinical signs.
Similar conditions 
A related condition seen in cats, dogs, horses, cattle, sheep and other animals is cerebellar abiotrophy. The symptoms are similar, and the two conditions are sometimes confused with each other, but cerebellar abiotrophy occurs due to loss of purkinje cells in the cerebellum that occurs after the animal is born. Cerebellar abiotrophy is usually a genetic condition.
See also 
- Cerebellar hypoplasia - article on the condition as it occurs in human beings
- Cerebellar abiotrophy - Very similar symptoms, slightly different cause, usually genetic
- "Cerebellar Disorders : Small Animals". The Merck Veterinary Manual. 2008. Retrieved 2007-07-10.
- This Is Charley Video of a cat with cerebellar hypoplasia
- Samson: Lessons From A Blind Dog Video of a dog with cerebellar hypoplasia
- Cat Cerebellar Hypoplasia Symptoms and Treatments
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