Deafness in ferrets is usually a genetic defect caused by Waardenburg syndrome, which results in the underdevelopment of the hearing mechanism of the inner ear. Ferrets with the Waardenburg syndrome, deafness is genetically linked with white markings on the face. Most of the time, this affects ferrets with the "blaze" markings (a white "badger stripe" on top of the head and a white bib) and those with the "panda" markings (a white head and bib, with no mask). It is estimated that 75 percent of badger and panda ferrets are deaf.
Posted in Ferret