When tamed, they can pick-pocket other players. If you get on of these early game, use it against other players. Just make sure you can get away without dying. (Also, they can ride on your shoulder, making them a nice companion to have. After pick-pocketing someone, put it on your shoulder and run away with the goods)
Great companion. Not much use in single player or pve but essential in pvp or pvx. For example, imagine a situation where you just snuck out a wooden cage in another tribe’s base and you find a wild pego and some bushes around you. Gather the berries, tame it up, make it steal a weapon and BAM! You got out of there.