If it's possible perhaps a command to set the appearance of the 'hound' to other animals. Maybe a few types could be beetle, rat, badger, pig? Keep the base 'animal' the same but just alter the appearance to add some new training concepts.
Imagine a gnome badgermaster, dwarf warpig trainer, scrapper rat fighter or beetle trainer?
That'd be cool, or at least use more canine models for different types of dogs. Mastiffs and whatnot.
Beetle Trainer of the legendary white stag beetle.
Sounds good, what about penguins?