HEARING LOSS IN DOGS

A MATTER OF SERIOUS CONCERN

- R. Selvakkumar. Ph.D.

Deafness is the loss of hearing in one or both ears and loss of hearing may be temporary or permanent. Based on the root cause and severity, it may be partial or total hearing loss. Deafness in dogs may be present at birth (congenital) or as a result of infection, trauma obstruction, tumours and old age (Acquired). Frankly speaking, deafness due to genetics, old age, and irreparable trauma is permanent and incurable. However, acquired deafness by infection and blocked ear canal can be cured by timely diagnosis and prompt treatment.

White pigmentation in their coats is associated with deafness at birth in dogs. Dog breeds like Dalmatian, Rajapalayam dog, Bull Terrier, English Cocker Spaniel, Russell Terrier, and Boston Terrier are commonly affected by congenitally originated deafness. Selective breeding practices offer the only tools to reduce such deafness in those breeds.

CAUSES OF DEAFNESS IN DOGS

The cause of hearing loss will differ depending on the type of deafness. It can be ruled out by a thorough screening of the affected dog's history.

Congenital Deafness: Dog breeds with white pigmentation are more likely to be affected by deafness. Selective breeding with genetically proven animals for breeding is the only option to reduce the incidence of congenital deafness in dogs.

Acquired Deafness: Acquired deafness is noticed in the dog after birth. This may happen at any time in the life of a dog from puppyhood to old age. The following are the causes of acquired deafness in dogs.