Half the people always want a wolf or a cat, it seems. Or a horse. Not that I'm complaining or anything, but where's your sense of Adventure? Romance?! Exploration! *cough* ahem, actually, I'm actually fine with a wolf myself...so long as it is sufficiently bizzare/exotic/overtly mythology based (ex: Raiju, cerubi-the later happens to be my favorite creature on MS). However, we already had a fairly recent cat release-several of them, in fact-as donis, too (atraetum, spinetails). I'm rather partial to that sort of thing. My personal preferences, though, are spiders (I know it probably won't happen, but if it did...still want a tarantula stream release), mythical beasts, and primates (great apes in specific), not in any particular order. A hydra *would* be nice, but somehow I see that ending up as a halloween release, though earlier would be much appreciated. The first Heroes of Might and magic had a nice hydra design IMO:

Brings back the memories, this does. Been a long time since a real snake release, too.