An animal (cat/dog/etc) missing a significant portion of an upper canine tooth. A Unifang is identified by an awkward smile with a single fang protruding from beneath the upper lip region. If a Unifang bites you, the bite mark can be recognized by the unsymmetric pattern of the missing canine portion.
Odie: Did you leave that bite mark on Jon's hand when you got busted stealing the lasagna?
Garfield: Let me guess, you noticed it has my Unifang trademark?
Garfield: Let me guess, you noticed it has my Unifang trademark?
by LAG_LAG March 28, 2009