Apparently there are scientists around who want to turn animals into men. This is the story of one of them. Of course, the signature story is that of “The Island of Dr. Moreau.” Here, a man traps black leopards and evolves them (?) into bipeds that have great strength. He is messing where he shouldn’t be messing. A castaway comes along and gets in the way (by being moral in one sense but messing with the pretty wife in the other sense). Anyway, there is a nasty sidekick who hits the animal/man with a two by four and catman becomes violent when he sees this guy. Anyway, other than a kind of oppressive jungle setting, there is little new ground here.