Hi,

I'm quite worried about my pet rat, she suddenly started bleeding brownish blood from her nose.
Along with the blood, she also apears to be excreting some other fluids from her nose, but I can't tell what they are.
She's still breathing, but doesn't move around a lot, she's mostly just lying down.

There are no visible wounds, and none of my other rats seem to be bleeding.
She's about one and a half years old.
Also, I'm not sure if this is relevant, but she looks pretty skinny, even though she's always the first to come whenever I feed them.
Everything was okay this morning...

What is this, and what can I do to help my rat?

Kind regards,

Christiaan