Hello, we have a 5 yr old qh that was fine earlier as far as we know, but we came home and she was laying down in the front away from other horses. So We went out side and she was laying in the back so I was just keeping my eye on her. I was watering and she came up to me and stuck her head into the flow of the hose which is not unusual for her so I sprayed her hooves off and noticed she was sweating a little more than normal. I gave her a scratch on back and she went and laid back down?? I know horse lay down BUT she is just acting strange I don't know what she could have gotten into too The other horses are fine as well.