A feral, squirrel-like mammal substantially larger than a squirrel, more closely related to foxes or canines

The feral Tree-Fox is a rather squirrel-like mammal in overall shape, though substantially larger. They are not actually related to squirrels, but more closely to that of foxes or other canines. There is a wide variety of tree-fox coloration and overall appearance. Their claws are used for climbing and make for effective attacks as well. Tree-foxes will form small packs to improve their hunting effectiveness. They are sometimes domesticated by forest dwellers for use as guardians or pets. Some tree-fox breeds are so large as to have 2 or more hit dice and stronger attacks, and these varieties appear more wolf-like, so much as to be called "tree-wolves". Thankfully they are quite rare.