Hello all I'm new here,  and the title tells most of it. But to be more specific, I recently bought a new kit last week, I put him in the same cage with my two year old ferret, and they been fine. But just today the older one seems to lack energy and sounds like he has mucus in nose and it looks likes a little bit of clear discharge flows out. The kit seems fine, energetic eats well and everything. But I am afraid of either being sick and how dangerous could this be? Have nah of you experienced this? How do I treat it? I'm pretty scared as I do not want to lose my ferret(s). Thank you.