I purchased a 5 year old paint gelding on December 10, 2011. He was stolen the night I got him home and I got him back almost a week later, he was turned loose on the road when the sheriff was brought into it, I do know he was kept with at least 1 other horse as he has some severe bite and kick wounds (all healed up now) but anyways, since around a week or so after he got back home I was riding him, he was warmed up (I ALWAYS lunge him before saddling, then before mounting and walk him for the first 10-15 minutes of riding before going faster) I began to trot him and he started coughing really hard, I dismounted and loosened the cinch until he stopped lead him around some and he seemed fine. This has been a daily thing every time I ride him, it seems to help when I rub his throat. Sometimes it starts at the trot other times when I lope him, once it stops it doesn't normally happen again so I thought he was sneaking bites of grass when I'd be off his back (I ride in a hackamore or halter and lead) but its just happening wayyyyy too much. I went out fixing fences a few days ago and he coughed then rolled playfully got back up when I started to him and started coughing really bad (the worst spell so far) and I hadn't exercised him at all that day. He is pasture kept 100% of the time and his only "friends" are the cows across the fence none of them have looked sounded or been acting sick. He has not had any contact with other horses since he was missing and I have not had contact with another horse either. Is this allergies a cold or ???? Our weather has been up and down really bad lately, wet and cold one minute to humid to burning hot and dry and nights have all been mid 30s at the highest, usually lower. Any ideas? Thank you ahead of time!
OH! He is in very good health otherwise if that helps any.