This isn't about my horse but on behalf of a horse I know.
I noticed yesterday that he has a large lump on his neck, around the area where the jugular groove is. It doesn't stick out of the skin, it is inside the neck if that makes sense... it is quite big and feels almost fatty and fairly solid... any ideas what it could be? it doesn't seem to bother him and could have been there for some time but it has remained unnoticed.
Any advice much appreciated.