So I treated them all with revolution...but the little lump is still there. If I pinch it between my fingers it feels like the size of a pea and quite firm...not really any bigger though. Im really not sure how long it's been there or what it could be It doesn't look like anything that could be typically tumour-like or cancerous right?It sounds like a mite infestation. The scabs appear on the neck and shoulders to start.
You'll need to treat all your rats with Revolution if so.
Rats can get lice and mites and you will need to treat them. It doesn't mean they live in dirty cages, or you are giving them bad care or yo...lilspazrathospice.blogspot.com