Second time this has occured in about 4 weeks. First time I was working the horse and today my daughter was.
Temp out was mid 50s. Horse is black with most of his winter coat. After 5 hours away from the barn (trip to farrier's) with no water (did not drink any when offered), my daughter saddled him up and gave him a medium work out. He got sweating a lot. He layed down in the arena with saddle on. She popped him on the rump with her crop and he got back up. Walked him a round for 10 minutes then put him in his stall. Still would not drink any water. About 20-30 minutes later, he drank about 1/2 gallon.
We have owned him 6 weeks. I do not believe he had been worked hard during the winter prior to us getting him.
Question being: Is it more likely that he needs more conditioning to build him up to harder workouts (going to use as barrel/pole/break-away horse) or could there be something else going on?
He normally drinks 3 to 4 gallons of water a day. His gut could be heard when daughter put her ear up to him.
My personal feeling is he needs conditioning and may have been a little dehydrated.