I felt cheated by the ending. The twist at the end of a movie has to make sense in the context of the movie itself, not as a weak marketing ploy to attract potential customers for a sequel. Dogs are the ones that kill and maul kids and babies all the time. Cats only strike out in fear. Dogs are mean and vicious.
Cats are polite.
When they go to the bathroom they dig a hole and cover it up. Cats are very clean. Dogs love stinky things. Cats are very dignified and know who to have sex with. Cats stay beautiful all the time while dogs are ugly and get uglier.