Bananasaurus, for use in d&d or pathfinder. drivethrurpg has rules for a bananasaur in the expanded Bananas supplement, or as a free monster of the day, from octopus apocalypse. I have printed and painted it, but haven't set it loose on my players yet.

It will need supports for teeth, the body and tail probably, too. Somewhere I think I made a more printable version, I will look for it someday.

Also, it can rest on all fours or reach up standing on its back legs and bananatail.