My TB has odd looking holes on his coronet band. They are on all four feet. Some of them look almost a cm deep! I have never seen this before on other horses. I first noticed them 3 months ago but a neighbor said that they were probably small punctures and cuts from stones or branches and I shouldn't worry about it.. Somehow I don't think so. They are always circular in shape.
He has remained sound throughout and never showed any signs of discomfort, even when you touch them and dig out the dirt from inside of them with you nail.
I've taken some photos after washing his legs so that you can see what I'm talking about
If anyone has encountered this or knows what it is please do tell, I'm not sure what I should do