Feeding:
The 3 most important foods for a rabbit are hay, hay, and HAY! Contrary to popular belief, rabbits do not need salt licks, vitamins, or hard wooden objects to wear their teeth down. Teeth are kept worn to a proper length by the silicate and lignin content of grass and grass hays. Do not offer rabbits plants, vegetation, or tree branches unless you are sure they are not harmful.
Some things you can give your rabbits are:
Handling:
Do not approach the rabbit from directly in front (unfortunately, shelter cages leave you few alternatives). Rabbits have laterally placed eyes and cannot see up close, directly in front of themselves.
When working with an unfamiliar rabbit, pat the rabbit gently between the eyes, til he relaxes, before picking him up. Never attempt to lift a rabbit who is struggling. Rabbits can easily break their own backs attempting to get away from perceived predators (us!).
Lift the rabbit by supporting his hindquarters and forequarters simultaneously. If the rabbit struggles to get down once lifted, lower yourself (and the rabbit) as close as possible to the floor to prevent injury.
Always remember that rabbits are a prey species. The more predictable their environment and the more securely they are handled, the more relaxed and sociable they become. Many rabbits relinquished to shelters have been severely traumatized in their former environments. They may have learned to survive by nipping or boxing. These behaviors can usually be eliminated by correct handling and social interaction.
Housing:
Indoor housing is essential. Domestic rabbits can die from heart attacks at the very approach of a predator.
Other outdoor concerns:
Wire flooring can cause hock problems, which can become serious enough to require amputation. Use ordinary cat or dog cages, or cover wire flooring with sections of newspaper (can be messy if bunny digs) or plain, brown corrugated cardboard. If dog cages are used, check to be sure the spacing between the cage wires is small enough to prevent a rabbit's head or limbs from getting stuck.
A cardboard "hidey box" placed in the cage can make a rabbit feel more secure. However, this may increase territorial behaviors - particularly in unspayed females. Boxes are most useful in wire cages, where the rabbit has no other means of hiding himself.
Avoid placing rabbits...
If your rabbit not neutered/spayed, avoid putting it with other non-spayed/neutered rabbits of the opposite gender.
Health:
If possible, have rabbits spayed/neutered before adoption. If this is not possible, include spay/neuter as part of adoption contract, and take deposit to be returned upon presentation of proof of surgery. Besides preventing accidental litters, spaying prevents uterine cancer (which can reach 50-80% as rabbits age), and neutering reduces spraying and other hormone-driven behaviors.
A rabbit who has suddenly stopped eating or whose eating patterns have suddenly changed needs immediate veterinary attention.
Litter Boxes:
Litter-trained rabbits are more easily adopted. Shelter rabbits will usually use litterboxes readily, if the box is place in the corner the rabbit has chosen for urination. Line litterbox with section of newspaper and fill with grass hay. Dump daily. Avoid pine and cedar chips as bedding or litter material; aromatic phenols can potentiate liver enzymes and irritate respiratory tract.
Bonding:
If possible, talk to the rabbit calmly and stroke him daily. Rabbits are highly social animals who thrive on attention and social interaction. Many rabbits are very overtly affectionate, and will nuzzle and lick their handlers. Others are shyer and more "laid back."
Supply Checklist: