Hello ! One of my boys Tobi has developed a bump on his hind leg..? I spotted it about a week ago so I decided to just watch it, at that point it was flesh colored and just seemed to be a stub- thus week I checked all 6 of my rats for any abnormalities like tumors or such and I checked it again... Today it was slightly bigger and red- it looked almost inflamed.? But he didn't seem to be in any pain..(didn't effect his walking at all-) Its on the inside of his leg too but I couldn't get a photo of that... Any ideas.? https://ibb.co/hVpK1QG