It's like trying to herd cats!
I really like the concept of this game, different character options keeps it interesting with the cats having different personalities, one thing you could add to make the gameplay more dynamic is random fish/green things being placed to add a bit of variety to the races as once you have the basic controls it becomes less of a challenge.
Overall a really good take on the theme, if it was multiplayer I think it would be even better, but that's a small detail.