Hi all hope I dont come across as a know it all on this site I have 17 rescue rabbits and 5 guinea pigs so I have come across lots of problems in my time so have learned quite a lot from my vet but a wonderful site to go on is barbi browns rabbitry barbi browns is a well respected american rabbit breeder she seems to know nearly as much as most vets she provides help on nutrition health issues breeding rabbit behaviour in fact everything you could wish to know about bunnies please look up her site she is very knowledgeable hope this helps.