I was looking at a horse to buy recently and noticed a small (about 3 inches long) bubble/bump on the the rear. It felt like it was filled with air and I could push it all the way down with little resistance. When I pushed it in, it felt like the muscle was torn or divided underneath… Could it be some sort of muscle dent from being kicked? I just would like to know before buying and out of curiosity. *Sorry no pics. Looks like a big bug bite irritation bump.
Ideas?