Do the Legs in the Air Make Sense?

Horses have a locky mechanism, which makes their legs so when horses go to sleep, they usually do standing up. But no one could quite answer the question of why it was sleeping on its back with its legs in the air. They that is quite unusual. Maybe it's just a special horse, a special i love. I men to put a sign up, this horse isn't dead. Don't knock on our door. Wekan, we can set that out. So the how? How? Mean, how do we know that? That is really fair question. Ams e diaryes ubut then how do you write a diary if you lo syoisto let