Green liquid

[LaylaMe]

So I have two guinea pigs and recently noticed a green liquid on the wall of one of their cages and in the bowl of the other, I was wondering if this might just from them eating more hay then normal and it's just their diet or might be something else.

 

[Piggies&buns]

I’m very sorry but we couldn’t possibly have any idea what it might be as we cannot see it.
please take your piggies to a vet if you are concerned about them.

 

[Claire W]

I agree. Sadly it is impossible for us to say what it is without a photo but please do see a vet if you’re concerned