Feeding it what you want it to gather has NO EFFECT on its father rates. These are determined by the additional level granted every level to increase your moschops' gathering efficiency of your chosen resource.
This guy is my favorite dino to start. It can farm LOTS of fiber, chitin, berries, rare mushrooms, rare flowers, polymer, etc. And it has a considerably good melee and health. But people don't see its value just because its a big coward iguana... Lmao. But for real, they're really one of the best dinos to get at the beginning, if not the best. Give this an up to let people know.
Moschops is literally one of the best chitin and polymer farmers, if not the best. Kill trilobites with it and you'll see how much chitin it gets (and a bit of oil and pearls too). I spent the last hour killing trilobites with Potato (my Moschops) and got two chests full of chitin. Apparently people don't know this so give it an up to let everyone know.
If you tame it you can ride it , also you can level them in special stats like organic Polymer farming, when you level you can increas the droprate for the item that you want . It is a good early and late Game Tame . The best thing is that they can gather rare ressources like organic Polymer or rare Flowers or Rare Mushrooms or Filet.