Yep, they do indeed spawn on Ragnorok, bear in mind though that because of the size of the map and the wall down the middle, they can be a bit tricksy to find. On my own Rag map I didn't see a single one for ages and then I started finding them by Green Obi, then one went and spawned right by my base in Twoshuk Forest, and I found another two going south of the wall into the desert, so I would say central areas would be best although that includes Murder Murder Snow XD

Ah great, they should be a bit rare anyway, so this is no problem at all. Thanks for the quick reply and the awesome mod, keep up the great work!