My 11 year old spayed bitch has a lump. It is on her underline just behind her front legs. The best way to describe the lump & it's mobility & "texture" is that it feels like a puppy's testicle. We're off to the vets tomorrow for an exploratory on her stomach lining & I will of course show the vet, just wondered if anyone had come across a lump like this & knew what it was & how serious?