Hey, Claire! I really like what you have here! I think what stood out to me the most was the very nice animations for the cat. They makes the cat feel really alive, and I think that's an important thing to have in pet games.
I think one thing I'm unsure about is the money system. I understand that the player is supposed to be a homeless man, but it feels kinda sad when I know the cat's hunger is in the red and I can't do anything about it because I have no money. You earn money by just waiting around for a while, but I think incorporating a new way to earn money might be useful! Maybe make the cat perform or something, and that'll cause people to donate money? Or maybe you could have the cat go and steal money from people and it'll cause the cat to be injured, which will then require the player to tend to it? Just some ideas to make the game a bit more lively!
But honestly, those are only things that would help expand this game. I think what you have here is really good for a week's worth of work! Great job!