lumps

One of my rat has these two lumps that seemed to have formed sometime today while I was gone. I’m going to get her a vet appointment when they open tomorrow. Does anybody know what they could be or what I could do about them?

My dirty boy Roach has come up with a massive lump on his body... Has anyone seen this before? It's right and up a bit from his penis and it doesn't seem to be painful, just ugly. There is a small scab on the centre but that's it. It's squishy like a cyst. Could it be an abscess? I do work...

Our 3.5 year old Purr has developed large lumps on her backside. She eats, drinks, grooms herself, is active. Should I be concerned?