It looks like a cyst. I would get it checked out by your. Chances are it is most likely a simple benign cyst or a blocked hair follicle. Any changes like that warrant a vet check to be on the safe side. Please update us as your info can help other members.
I just noticed it today. She has a blue one very much like it in her ear...that one the doc said is a cyst.
The one on the leg is solid,it's hard to tell if there is fluid in it, but it does seem similar to the one in the ear. I'm thinking it's a cyst but I will keep you updated.
Doc drained it, black liquid came out. It's a cyst, doc said keep an eye out for it coming back. Depending on how quickly it comes back or if it comes back and the size we will consider removing v it. So good news!
Thanks for the message! No the vet did not mention the cause, seems to be pretty typical though. She has these other cysts that look like black heads that are minimal. Vet just says keep an eye on everything!