I agree with others that WASD was a bit confusing. Also, it is possible to hold the mouse down and simply hover over the falling paws to make them disappear. Maybe check for the initial click only?
Other than that, this was a lot of fun and I see a lot of potential here. I really liked that each mini game used a different control scheme (keyboard then mouse). I can picture a longer game where you spend the whole day playing with your cat, using a bunch more minigames for a variety of activities.
The art is very good, specifically the little screens on the top left during the games. The art / style is the real standout here (I liked the little hearts in the cat paws).
This is a good prototype for a really cute, longer game. If you ever end up making one I would definitely play it :D