HELP! poorly bunny
Hi, my bunny is 16 months old and is normally very active and friendly. He is outside in a 2 story hutch and normally stays up the top despite his bed box and the entire bottom part being full of thick straw. Today I noticed that he was sleeping a bit more than normal and was laying right down,sometimes on his back, even though it is cold. He is also sleeping in his straw today.
I have been keeping a close eye on him and he is just not his normal self, his eyes are usually half closed and he isn't moving as much as normal and hasn't eaten much.
There are several things that could have made him ill as I have been away and left him with my neighbour who may have given him slightly different food etc. I did get him back yesterday though and he seemed fine then. I know that she was giving him about half a carrot a day where as I only give him a little fruit/ veg every few days (but he does eat grass when he is out for a run around). His cover blew open in the night before I got him back so his hay and sawdust did get wet, but I cleaned him out as soon as I got him back so this shouldn't have affected him.
I put him in the kitchen earlier to keep an eye on him, but didn't want to keep him in because of it being so cold when he had to go back out. He has plenty of straw, a heat pad and a cover. He isn't sneezing and doesn't have any discharge from his eyes or nose.
I would be grateful for any suggestions as to what this might be or what else I can do.