Panther

The  is one of eight possible pets in Torchlight II.

Poet Ogden Nash once opined, "if called by a panther, don't anther," and that's good advice for your enemies. Sleek, feral, intimidating, the Panther melts into the shadows and pounces on corrupt undead when they least expect it.

Source

 * Official Torchlight 2 site