We've had a rescue rabbit 3 years, we suspect he was old when we got him (said to be a stray, we suspect a breeder had dumped him). He will not eat hay - and we've tried various types - so is put out in a run every day. Lately his bottom has been getting dirtier. I have tried wet kitchen paper but that doesn't seem to remove much. His poop looks normal so it could simply be mud, but I'm getting concerned in case it persists and he gets flystrike in warmer weather.
Any suggestions or do I take him to the vet Monday? His teeth/general health have been thoroughly checked only a few weeks ago. He had a mite problem but the vet could see nothing else wrong. Can I get the stuff that guards against flystrike without seeing the vet again?