From a series of games called final fantasy.
Seems harmless until it actually comes close enough to "Doink" you with its knife.
The Tonberry society is hierarchical, there seems to be some sort of a King position in some circles, though how the King is chosen is unknown. The King is responsible for protecting the others, so it is likley that he does less hunting and more training. All of the tonberries wear simple burlap-like robes and shoes, but the King also wears a gold crown that hovers a few inches over his head.
Tonberries are quite intelegent and capable of speech. However, the speech is not so much oral as telepathic, as their mouths are not refined enough to produce speech.
It is very difficult to kill a Tonberry, but to prove one's strength to the Tonberry order, one must often kill many to lure out the King, in order to defeat him. A Tonberrry is a valuable ally.