This is the ear of a mare that boards at our barn. She's always had it to some degree (been boarding with us for over a year but I've known the owner for over 5 years) normally it's just unsightly but lately she has been sensitive to get a halter on and off of. Owner says she'll have the vet out to check it when she has money. Could it be warts? Or a fungal thing? Doesn't seem to be contagious as shes out with my mare and she's never had anything like it. Any thoughts?