Suited for very young players, very easy even on hard, making it too boring for adults. It's the same game as
Pet Vet 3D Wild Animal Hospital, which was the successor of
Pet Vet 3D Animal Hospital. I would recommend this one of the series, because it contains four languages, despite the description above: English, German, Italian & French. You don't need a crack or something, just install & play. Nice graphics, good animation, especially of the animals, lot of options to update your environment. Animals can't die, even if you let them starve for days and ignore them completely. So, if you know a girl, that didn't reach puberty yet, here is the game for her. Boys may like it, too, but will they identify with the hair changing and dress swapping stuff? Doubt it, at least there is no pink everywhere, so maybe.
You can improve the graphics a lot by adding anti aliasing and anisotropic filtering by force within your graphics driver. The game itself doesn't contain these options, but does not show any errors with it applied.