A yeast-like fungus isolated from a granulomatous and ulcerative skin
lesion in a mongrel cat was mycologically examined. The isolate was id
entified as Sporothrix schenckii from the morphological findings and i
ts pathogenicity in a mouse, confirming the first case of feline sporo
trichosis in Japan. Fortunately, no transmission to humans occurred in
this case, however the risk of humans contracting Sporothrix schencki
i infection increases with the increase in the number of animals with
sporotrichosis. Consequently when handling such animals protective clo
thing such as gloves should be worn to reduce the risk of transmission
of the fungus through open wounds.