This helm is a wondrous item. Download the attached file for a PDF of all the magic stuff I've created!
Animal Companion's Dragon Helm: The name pretty much says it all. This vicious-looking accessory is for the ranger that wants their animal buddy to have that extra little “I'll eat your face right off” look that's all the rage right now. It increases the damage dice by one value (the d8 at level 0 becomes a d10, the d10 at level 1 becomes a d12, and the d6s become d8s at the higher levels,) and in addition, once per battle when the animal is hit by a melee attack, the attacker takes a d4s worth of damage for each of the companion's levels. It's a pretty spiky piece of head gear.