Congenital Hypotrichosis in a French Bulldog

The document described a case of congenital alopecia in one of four female French bulldogs from a litter. The affected dog was otherwise clinically normal, with sparse hair distribution on the head, tip of the tail, and paws, similar to the Chinese crested dog. Histopathological examination of skin biopsies showed a reduction in the number of hair follicles, hypoplasia or absence of epidermal appendages, and pronounced follicular hyperkeratosis. No abnormalities in collagen and elastic fibers were detected.