Well, he was abit strange yesterday. He was in his run all day with fresh water and hay, and then during the day I gave him some cucumber. When I brought him in in the evening, I noticed he hadn't done anything (wee or poo) in his run. He went straight to the newspaper in the living room where he always wees, and did a huge wee. He then began to drink it!!! He was lively as usual. He isn't a big bunny, but quite svelte. Should I be worried??