The water one totally looks like an Otter to me...John Funk said:My guess was spot-on about the thin bipedal one being a Grass-type (kinda resembles Treecko [http://www.google.com/search?q=treecko&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-USfficial&client=firefox-a], don'tcha think?) but it looks like I got the other two switched: We have a Fire piggy with rabbit ears, and a Water-type... okay, I don't actually know what that is. It's holding a seashell, it has a beaver tail and webbed feat, but it almost looks like a perpetually sad panda in a way, don't you think?
If I was even potentially interested in moving on from Soul Silver (which I'm not) I'd be going with the Otter.
It also says that's the 'Sea Otter' pokemon on Serebii.net.