M.O.M. Classification: XXX
The Jarvey is found in Britain, Ireland, and North America. It resembles an overgrown ferret in most respects, except for the fact that it can talk. True conversation, however, is beyond the wit of the Jarvey, which tends to confine itself to short (and often rude) phrases in an almost constant stream.Jarveys live mostly below ground, where they pursue gnomes, though they will also eat moles, rats, and voles.*
*Excerpt from Fantastic Beasts & Where To Find Them.