Vet Emergency 2 (Downloadable version)
The game is decent, if you like this sort of thing. My children enjoyed what we could play of it. The sound has a tendency to get suddenly loud, so you have to adjust volume a lot. There is no option to mute music. You can turn off the voiceovers, but then you don't have subtitles and it makes solving the cases harder.
I don't see much replayability, since the cases are fixed and not random. Perhaps play a second time without hints, but by then it is fairly easy to know what to do.