Crusties on butt of female pig?

[Lotteluvspigs]

Hi everyone, recently it's come to my attention that one of my female guinea pigs has some kind of crusty stuff around her butt area? It looks kind of concerning to me and I'm not sure if It just means she's due for a bath or what? I know there supposed to clean themselves but I also don't know if that includes the genital area. I would love some help and lmk if I should take her to the vets.vet.

Sorry if this is a bad photo but she's very squirmish and it's the best I could do.

 

[weepweeps]

Hello.

A few questions:
How old is she?
Is she behaving normally?
Is her weight stable?

I think I’d clean it off and see if it returns. Piggies excrete excess calcium in their wee. Maybe that’s it.

If you are worried or she’s behaving off get her seen by a vet. Good luck.