User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-74.177.199.4-20120908113125/@comment-4212769-20120912222418

This theory is not possible as the normal Royal Ludroth is already the (alpha-)male.

I would say that Royal Ludroth Subspecies is a true subspecies that has a different diet as the normal one. Not only he eats poisonous animals, he can also extract it from the prey and store it in his body, mainly in the mane. The color change is there because of the amount of the poison that "infects" its skin, though the poison has no effect as Royal Ludroth Subspecies is immune, so it only changes his color.

I would say only males (when they get adult) eat the poisonous animals. The smaller males and females are color-wise more or less like the normal Ludroths. That's why there aren't any purple Ludroths as they have only minor differences that are hardly to see. That's my theory at least.

The reason why he is able to come to the Mountain Stream is probably because he isn't an aquatic monster as it doesn't swim anymore. He still has the need to moisten its skin but it doesn't need it as often or as much as the other one so it can go further and longer away without getting any problems. So he maybe came up in the (nearness of the) stream of the rivulet flowing down. It could be enough to moisten his skin.