Loving the new Trike model, WC!
If it's not too much, I'd like to nominate the mammoth for a visual overhaul. It was one of the first animals in the game, but the model hasn't aged gracefully. The Mammoth's species name literally translates to "Stone Head," so why not put it to use? Like the rhino, I suggest a momentum-based charge, but more one that clears animals out of the way. The charge could provide knockback only, simply shoving creatures out of the way (without damaging them) like a giant, prehistoric snow plow. It would also allow you to move through forests and destroy rocks and trees without getting stuck. A last aside for the Mammoth - Dilos and other small predators currently aggro it. Could we fix that?