[Some aspects of hereditary perceptive deafness and leukism (author's transl)]

A discussion of certain aspects of leukism and deafness as well as the possible relationship between the two, based on a study of the literature on cats, dogs, mink, mice and man. This is followed by some preliminary communications on personal studies in Dalmatians, Bull Terriers and Rottweilers. The paper concludes with some notions on genetic aspects.