About 2 weeks ago, we noticed a lump in Skeeter's back right leg. When I first felt it, I thought it was probably a lymph node or something like that. But, it's still enflamed. It's about the size of a bean, not hard or anything. But, firm. I'm a little worried about it. We are taking him in next week to get neutered, so that's when we'll ask the vet about it. It doesn't bother him or anything, but it's been there a while. Any thoughts?