Sure they would - a jelly drops a potion made from its body, the other animals have stingers, teeth and claws that are excellent weapons, and skin or plates that make armor.
A petrified dead snake makes a great wand.
A web from a spider can be used as a trap item (throw it at someone and "stun" them for a time). Make it reusable by pulling back the cord attached to it.
A bear arm makes a sword-like slashing weapon.
