My Dad's 17 yr old fox terrier has a lump bigger than a golf ball on his side. It doesn't bother him and the pathology indicates it's just a fatty tumor, so we've left it. He's so old at this point that removing it could be dangerous. As long as it doesn' hurt, he'll keep it.

Like I told you, I even have one on my arm. No big deal.

Hope Clover's is nothing, too.