I actually REALLY like this idea, and personally think it's an interesting take on the theme. The issues for me here were more on the presentation and gameplay sides. It was difficult to grab the animal I wanted to grab, then difficult to let them go again. By difficult I just mean the controls seemed fidgety and imprecise. And personally I think the sim should have started off more slowly to let you get the hang of it. The short, repetitive music loop also just got too aggravating too fast.
This is a very interesting idea though, and I think it shows a lot of creative promise, also, regardless of how it turned out, implementing a functional sim game in 48 hours is pretty damn impressive! I hope you'll keep at it!