1. A person who catnaps a cat.
2. A sleazy male who steals another man's wife or girlfriend; a snatchbandit.
1. My cat was missing for so long I'm sure he was catnapped. Too bad the catnapper could only be prosecuted for animal cruelty instead of kidnapping.
2. The catnapper is the bastard who screwed my sister-in-law ought to be neutered. Wait till I tell my brother; his ass is grass.