15 Disturbing Facts You Really Don't Want To Know

Horses can't vomit

You'll never see a pony puke, even though nearly every other animal with a spinal column can. There are all sorts of anatomical reasons for this unusual difference: horses have much stronger esophagus muscles than most species; their esophagus connects with their stomachs at a much lower angle than in other animals, and their stomachs aren't surrounded by abdominal muscles (which contract to make vomiting possible).