Little Ricky! We loved you and we will miss you forever! Hair block is most in rabbits with long hair or 'wool,' particularly when they are molting. Rabbits groom themselves frequently and can ingest hair this way. As a preventive, most Angora breeders feed their rabbit papaya tablets, as papaya contains enzymes known to break down hair in the system. However, a friend told me that a vet told her that papaya tablets are effective because they encourage a rabbit to drink more, and the extra water moves hair through the system. A rabbit with hair block will be reluctant to eat and may show droppings connected by hair. If a rabbit has actually developed hair block, it's a serious situation and he should probably see a vet right away. Prevention is much more effective than treatment. However, most times a rabbit stops eating is for a reason other than hair block; there are many things that can upset a rabbit's digestive system. Usually you should only suspect hair block if your rabbit is molting or is a of a long-haired breed.