Anotia, an autosomal-recessive congenital disease of dogs, is defined as a congenital absence of either one or both ears (pinna).
The cause of this condition is unknown.
Affected dogs have normal hearing despite pups having no or only a vestigial auricular tag and atresic auditory canals. The inner ear appears normal, including the tympanic membrane and the auditory ossicles.
- Villagómez DA & Alonso RA (1998) A distinct Mendelian autosomal recessive syndrome involving the association of anotia, palate agenesis, bifid tongue, and polydactyly in the dog. Can Vet J 39(10):642-643