I have been reading on past posts on colony raised rabbits and decided to try it. I put 4 does and 3 bucks in the barn together. For 5 days they got along fine and then 2 of the bucks got into a fight and the loser's ear was injured so I removed two of the bucks and brought them into the house. All the rabbits were purchased separately except the two removed bucks. That evening the injured buck began to flop around. He would sit with his head down and then roll over and kick. He did this for several hours and then died. I thought it was from an injury he received in the fight. That was on Monday, February 28th. Tonight the other rabbit that was with him is doing the same thing. There appears to be some paralysis in the hind legs. No diarrhea or nasal discharge. I tried to look at the links for rabbit diseases but can't find anything that sounds like this. The other ones are still looking fine. They all eat the same rabbit pellets. Does anyone know what this could be? Edited: I received a report from the water company saying there was coliform bacteria in the water and the water failed the test levels but it was not an emergency or or dangerous. We have a filter but if one of my kids accidently got the water from the tap rather than the filter, would this bacteria cause these deaths? I have 5 more rabbits who drink pond water and are not sick. several years ago I lost my rabbits, a blind cat, and a guinea pig all in the same weekend that all four of us had a "stomach virus" diahrrea and vomiting. The water company keeps telling me there is no connection. Could this be the cause of the mysterious deaths?