Very cute and well made visuals. Great style! I think the mix of mechanics and having to switch back and forth to accommodate his hunger and wellbeing worked pretty well for the most part. I could easily see this being expanded on to where there could be multiple veggies or even cooking to combine them for a super hunger boost or something. Having more types of games to play would be great as well, but of course its beyond the scope of the jam so not a criticism or anything. I also like that you could buy humans to feed him, I only wished they staved off hunger loss a bit more as once day 8 or 9 hit it felt impossible to keep up with the hunger even after feeding it a human and rats and veggies! But very cool game with a solid foundation that I could see being built into something bigger.
Edit: Just wanted to add a link. I played your game while recording and uploaded some of them so the devs can get some better visual feedback. Your game starts at 16:53