No .... I don't know how on earth I didn't realize you were talking about a bunny barn when I made that post above.
The big issue with wood is liquid .... and rabbit pee is very caustic. I'd probably go with something I could hose down ... tile , rubber or linoleum with a moisture barrier between it & the wood subfloor as well as partially up the wall (like a bathroom). I'd also add a floor drain if at all possible , even if it just went out into the yard , just to make sure any water / pee isn't able to stand and cause you problems down the road.