Join Date: Aug 2007
Location: Dallas/Fort Worth, Texas
• Horses: 0
Sounds kinda like melanomas, which are a type of cancer but don't freak out because they are very slow-growing and generally don't cause the horse any problems. My 20-year old has had them since he was about 5, and his tail is covered with them. He also has them on this groin, back and jaw, but the tail is the most common location for them. If you check the underside of your horse's tail and there are any similar bumps, I'd just about guarantee that is what it is. Gray horses are notorious for getting them, but any color horse can. They can pop up pretty quickly and they generally grow to a certain point quickly then don't grow at all or very little for years. Get your vet to check it out, but if they are melanomas don't worry too much about them, I've seen horses at age 30 with tons of them!