Here is a funny story for you. My twin brother and I grew up in the city so we didn't really get to see very many horses. He had a friend who lived in the country. His friends mother had a farm and owned horse stables. I guess its a place where people can take their horses and leave them there to be trained.
My brother would sometimes go to his friends house and help clean stalls. While he was there he would look at the horses and watch them get trained. Well one day he went there and there was a horse laying flat on the ground.
"Your horse is dead!", he yelled. His friend and his friends mother came running. They hopped over the fence, looked at the horse and started laughing. My brother was so terrified. He didn't know why they were laughing. They told him the horse was sleeping.
Here my brother thought horses slept standing up. When he seen the horse laying flat on the ground he thought it was dead! We still get a laugh at that every time we see a horse.