Rabbits can be a great pet for people with CF. I have MAJOR allergies and couldn't tolerate a dog, cat, or even bird. We adopted a rabbit about 3 months ago, and I'm not having any problems. Bunnies with short hair molt, rather than shedding (which cuts back on dander) and they are very clean from self grooming, even more so than cats are. Rabbits are also very easy to train to use a litter box.
Bunnies are NOT a good pet for children. Rabbits are prey to just about everything, and they need to be handled properly. Mishandling them can cause painful scratches to the human. Also, since rabbits are so high strung, when they feel threatened or someone tries to pick them up, they can kick hard enough to break their own backs.
If you want to keep the bunnies it is ESSENTIAL that you bring them to a vet to be checked out to make sure they don't have any problems like fleas, ticks, snuffles (a rabbit sinus infection) or bad teeth. You must also have the rabbits spayed or neutered. If you want to keep the rabbits you have to keep ALL OF THEM. Rabbits are very social creatures, and bonded rabbits, particular siblings can suffer extreme anxiety if you break them up. You should also consider whether you're willing to let the bunnies live in the house.
As fas as CF goes, bunnies are actually a very reasonable pet and can be amazingly affectionate. If you're not willing to be responsible for these 3 sweet fur balls, then I suggest you leave them alone and let them stay wild, otherwise you could be biting off more than you can chew.
Here's a link to one of my blog entries where I talk about adopting our rabbit, Gimli. <a target=_blank class=ftalternatingbarlinklarge href="http://livingwellwithcf.blogspot.com/search?q=house+rabbit
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