[SKB_Hamsters]

Hi and welcome to the forum.

Erin is no longer active on here. So they probably wont see this and be able to help you out. Which thread of theirs were you looking at?

Male robos do have a scent gland in the middle of their bellies. They can get impacted but it not uncommon for tumours to occur in their scent gland. Ive have asked my vets to check lump on my hamsters by doing a needle aspiration to give me an answer. All case it come back as a tumour.

How long has he had the lump? Would you be able to get a photo (might be difricult with how wriggly robos can be).