Ferret

The  is one of eight possible pets in Torchlight II.

The ferret was originally exclusive to the box version of the original Torchlight game, though our clever modding community soon found a way to include his sheer adooooorableness. Don't be fooled by his size, the clever ferret is as fierce as a honey badger. With goggles. Due to overwhelming popular demand, the Ferret returns for all in Torchlight II.

Source

 * Official Torchlight 2 site