Bighorn Bison

Field Notes
The teleporter nearly launched me into a steaming dung heap. I could not have anticipated such an enormous beast being its source. More impressive than their rumbling bellows is the bighorn's charge. Their many tons of muscle produce a crushing slam of horn and matted hair.

When they are not stampeding after me I have observed these monsters using their massive heads to bludgeon rocks and fight amongst themselves. How can they expend so much energy on fruitless activity? Are they merely trying to keep from freezing?