Context:
Finding it very difficult to find corpses that you can consume. 75%+ of the animals you come across cannot be used for the perk. I think you are only able to consume skinnable animals? I am not sure there are any common magical beasts or beasts corpses. It is very difficult to ever get to use the perk in a quest setting unless you do some gimmicky thing of empathying a suitable animal and bringing it to the quest area.
Suggestion:
Could we make it so we can use ANY animal corpse or add more options like Animal+Reptile+Vermin or increase the duration to be higher than turn/level? Anyway to make it so it's not so difficult to use the perk benefit. Bonus could also be lowered to +2 str/dex/con instead of +4 to balance out the increased duration/sources of corpses.