Another predator for the snow biome could be Yeti and for mountain forrests Bigfoot. Of course they should be very rare.
Loot could be their warm fur. Maybe you could use Yetis feet as shoes to walk faster on snow (Would be cool if you're slowed by high snow).
And of course some weapons like bow and arrow (short as well as long for the long distances) and spears would be very nice!
I'm sure that it will be added, but i jsut name it: weather! Rain, fog, lightning, storms and depending on biome snow(storms).
