Fleas
If your rabbit is scratching itself a lot, he most likely has fleas. Fleas are small flying insects that are dark brown in color. They aren't easy to find in all that rabbit fur, but you can see small black specs of flea poop that has been left behind. Fleas need to be treated ASAP as the fleas will lay larvae on rabbits, rugs, carpet and anything hair like. The best flea treatment for rabbits is Revolution. The dosage needs to be worked out based on the rabbit's body weight, and is then applied to the back of the rabbit's neck. This is so it is not groomed or licked off. Rabbits should be seperated after treatment to ensure they do not lick the flea treatment from each other's fur. Any rugs or material items eg. towels, that have been around the rabbit should be washed in hot water to kill the larvae eggs. The revolution treatment lasts for a month, but rabbits may need further treatment if more fleas have hatched from the eggs.