Whenever this Pokémon uses a Jaw-based (biting) move, it regains HP equal to 1/4 the damage dealt. If the move used is Vampire Fang, Vampire Fang will first drain 1/2 of the damage dealt, followed by Ravenous draining an additional 1/4 of the damage dealt.
If this Pokémon is holding a Big Root, the HP regained increases to 13/40 the damage dealt.
If the target has Liquid Ooze, this Pokémon loses HP equal to 1/4 (or 13/40 with Big Root) the damage dealt instead.
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