Help, My DD's Thrianta rabbit seemed perfectly healthy then was found limp, unable to even hold up her head. She passed in my DD's lap. She was very thin. This came on quickly, she wasn't that thin even a few days ago when I held them all. She was in with her 3 other litter mates and now another of them is looking off. There are no other visible symptoms. No nasal issues, no diarrhea...These are her favorite buns, she was planning on taking them to fair with her 4-H group next month. What could it be? We've scoured the Rabbit talk pages and all her books...and are still not sure what to do. They are in a all wire cages that she keeps very clean, lots of free choice timothy hay, pellets and natural grain mix, both water bottle and crock and she feeds greens (grass, blackberries, and grapes) everyday. She wants to get them on mostly natural feed. Any thoughts or advice would be greatly appreciated!
TIA
TIA