My 11 month old colt has a large wart on his muzzle. When we first bought him as a weanling, it wasn't there or was too small to be seen. When I first noticed it, when he was around 8-9 months old I thought it was a tick, but when it didn't pull out and it bothered him when I pulled on it I figured it wasn't a tick. Now it is pretty large, about the size of a nail head, and cauliflowered. There is also another small one forming close to the corner of his mouth on the same side.
My trainer had told me that sometimes foals will form warts around their muzzles and as they get older the warts will retreat.
Is this likely or should I be concerned and call the vet to have it looked at/removed?
I don't have any pictures, but I can take some if need be tomorrow.