Understanding hereditary cerebellar degeneration in cats — a progressive neurological welfare challenge.
Cerebellar abiotrophy causes progressive welfare impairment through advancing neurological deterioration. Kittens initially appear normal but gradually develop the characteristic signs of cerebellar dysfunction — intention tremor, wide-based stance, ataxia, and hypermetria (exaggerated limb movements). As Purkinje cell degeneration progresses, coordination deteriorates further.
The progressive nature distinguishes cerebellar abiotrophy from cerebellar hypoplasia (which is non-progressive). Cats with abiotrophy worsen over months, requiring increasingly intensive management to maintain quality of life. Environmental modifications — non-slip flooring, padded areas, low-sided feeding and litter equipment — that help initially become insufficient as disease advances.
Quality of life assessment requires honest evaluation of the cat's ability to engage in valued activities — eating, drinking, using the litter tray, interacting with people, and resting comfortably. When these basic functions become severely impaired or painful, euthanasia is the welfare-appropriate decision. Genetic counselling and testing prevent continued production of affected kittens in predisposed breeding lines.