The eyes definitely look like a cat's. Bunnies have round eyes, and usually very dark. BUT, I LOVE Mel's idea of altering it and making it the cat in the bunny suit that your daughter saw. You wouldn't have to make too many changes. And a cat who has been dressed in a bunny costume would definitely be unhappy, so the face is fine.
Another reason it would work as a cat disguised as a bunny is the ears. They sort of flop over each other, like those strap-on fake ears that people put on their pets. If you could alter it so that he's wearing a "bunny hat," I think you'd have something. You could also leave it as a bunny and just make the eyes more round, but since there are collectors for both cat and rabbit art, why not go for both?
I hope I'm not being overly critical. It's a great piece, and I sure wouldn't give up on it.
Kathy
Kathy