I didn't find this great, but I still enjoyed it. I love the design with Alice's nipples. It makes biological sense. Then again, I don't know how many nipples rats have. The animation was good, though it was off in some points. I do think it was too long.
There weren't quite enough jokes to support the whole thing. The funniest part may have been the Pac-Man bit. The gay rats part was good too. These are really grotesque designs. Pinky and the Brain, they are not.