This is by far the best gatherer of organic polymer. Carry the moschops to a frozen island with penguins. Put it on follow. Create a whisle group and whisle with the (Xbox) Lb down d-pad while looking at a corpse. It will collect the penguin corpse. Do not do this whisle in your base.
When sending these guys out to gather, go to herbivore island (the one in the southeast where you must use an Ichthyosaurus or a raft and not the one near the red obelisk) or you run the risk of them dieting to predators. Believe me, I currently have one named Rusty (for his color pattern), and he’s got 1216 health currently. He was attacked by a Spino while he was innocently gathering berries for me one day, and he continued to gather from trees while attacked accidentally biting the Spino as he did so, doing about 200 damage each bite. This MASSIVE amount of damage was enough to scare away the Spino after about 5 or 6 bites, and then my scorpion chased it until it ran to the water for safety in an act of surrender. If you don’t have access to rafts or Ichthyosaurus (do the quest to tame one to get a saddle for it) then do your research on the island’s regions and then find a safe region so your Moschops can gather in peace. Thanks for reading.