What are the symptoms to stroke in horses?

Elevated respiration in an inactive horse (normal range is 4 to 16 breaths per minute).

Elevated pulse in an inactive horse, or pulse that does not drop after several minutes or climbs once exercise has stopped.

Profuse sweating or no sweating at all.

Elevated body temperature above 103F.

Irregular heart beat known as 'thumps'.

A depressed attitude.

Dehydration. Test for this by observing your horse's flanks. If they look caved in, he is probably dehydrated. Pick up a pinch of skin along your horse's neck. If the skin snaps back quickly the horse is sufficiently hydrated. If the pinched area collapses slowly the horse is dehydrated.