I have a 22 yr old morab. I've had her for 13 years. She has been an easy keeper. Great all around trail horse/games horse. She's been passed down thru the family and now my 9 yr old son has been riding her for last 2 years. She's SOUND, which I felt like was quite a feat as most horses I keep to to retirement, have lameness issues. But she's100% sound. She has slowed down a bit since she hit 20 and has taken her job in taking care of my son VERY seriously. I plan to keep her to the end. She's in good weight and doesn't require a lot. I have noticed since spring when she runs in pasture she coughs. Not constant but regular. She ESPECIALLY coughs when we tack up before we ever even get on. She then coughs once or twice and is fine under saddle. Ive known many older horses that cough during warm up. I think this is a bit more than that. They are fed roundbales in pasture as pasture is not enough to support the 3 I have. I had thought maybe it was the time of year, well now I know that isn't it. Then I thought maybe hay, so I changed hay, nope still coughing. Asked daughters trainer , she says allergies as they get older., I KNOW it isn't that. Vet is coming this month ( a new to me vet) for coggins and teeth and I will ask him. I THINK she is getting a little heavy with age, but I would like to know if anyone has had anything help?