It was in an old JTAS. Basically, it's a smallish monkey with a beak on it. But it supposedly could boost Psionics. Was supposed to be found on most worlds. Very friendly.
Since it added either 0, 1d6, or 2d6 to PSR when the monkey was bonded and in close range, convert that to 0, 1d8, or 2d8 (or d10's, if generous) bonus to Psi.