Thank you for the information. The area is not infected or inflamed.Hi
Sometimes guinea pigs can have rips in their ears from old fights in which another pig had bitten their ear (my Daisy has some as she was housed with many females at the rescue). If the ear or has just suddenly appeared or looks sore or inflamed and your piggy is in discomfort, please have him seen by a vet. Otherwise if it looks healed and is causing no pain, I wouldn't worry about it. We wouldn't recommend home treatment.
Hope this helps, more experienced members will be along later.
Thank you for the information. The area is not infected or inflamed. Cowboy was a rescue too and I have no idea where he came from before that. I will keep an eye on it and for sure let the vet see it next time he goes.