User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-1758220-20110706160008/@comment-1758220-20110706173821

Good answers for most, however:

-On the Silver Rathalos/Gold Rathian ecology pages, I recall it saying something about them changing color with age, and that the Silver and Gold was the last stage in the life cycle or something.

-Pariapuria certainly does puke up parts of its digestive system, as evidenced by the shiny rewards that you can gather sometimes after he vomits. I also remember it saying something like this on Paria's page.