I think twice now trebby has pretended like he was going to die with his attitude problem and I think both times he might have accidentally ate something he shouldn't have ate. I really don't know what caused his attitude problem but that would be my first guess.
One of those links that I read about how bad dog food was for a rabbit mentioned that it can make them fat quickly, so it's possible that she just seems very skinny to you because she was obese maybe.
Yes
There should be lots of fresh hay on one side.
Ok! Does anything other than hay and the horse bedding pellets go anywhere in the box?
Yes.
You didn't watch the video of the litter box I posted just for you, did you?
Up off the pellets...in a basket or something.
