Poor Shiloh! I really hope she's ok and it's nothing serious!! Nebo had a small, hard, lump removed from his leg near his paw also when he was 4 months old. It was about the size of a pencil eraser...so far it's turned out to be nothing, just a wart, so I hope it's the same for Shiloh! Finding bumps really freak me out too! I was at the vet 10 minutes after I found it!