User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5043481-20121008184014/@comment-4212769-20121008190625

I still don't think Jhen is carnivorous or insectivorous. I'm quite sure it feeds on plants, probably Cacti. There are too less animals that it could feed upon in the Great Desert and Delex wouldn't be following him when they live in constant danger to be eaten, especially if they are his main food. They'd rather live in the Sandy Plains I guess. And I think they eat rocks and minerals/ores, too to complement their diet (minerals/ores) and to easier digest the Cacti (rocks). I guess Jhen Mohran normally eats on other ores and it secretes it at the skin but they get lost when it gets lost through friction. Jhen Mohran Subspecies eats other ores (maybe Carbalite) that cling to their skin better and can attach to his skin easier. That's why the surface of Jhen Sub is crystallized and violet.

Well, these are at least my thoughts.