User can use a Venus flytrap that is in the form of a tail.

Pros:
-user has sharp teeth
-user doesn't have to produce sap but can
-user can digest anything
-user's skin will be tougher than normal
-user produces poison

Cons:
-flytrap may disobey orders at times
-flytrap must be fed separately
-user will have huge appetite
-user must put with antics of the fly trap

Weakness: sugar
Flytrap will become hyper and cause havoc

Sketch of the flytrap I done