The Claycats films are like that, but with Claymation instead of animation and lots and lots of gore.
|Good guy tuxedo cats infiltrate an illegal catnip grow operation|
The cats kill and are killed. Heads are chopped off, they're shot, they're stabbed, they're blown up. It's horrific, really.
View at your own risk. The little clay cats are cute until they start blowing each others' heads off.