LOL, It's pretty fun, I wasn't expecting that many type of cats. Maybe the theme is not there but the prerequisite for sure.
I see this in the mobile market for free with ads. You have a lot of space in the left part of the screen. I would recommend to get rid of the button shop and cats and implemented them directly. For the shop, you can add an icon "i" to display more info. And for the cats, maybe simplify and have a clean table. Plus, it would be cool when a cat lose a live, see it or either in the cat's chart or on screen (on screen maybe show the remaining lives).
Congrats for the game.