Rabbits are naturally sociable animals usually preferring to be in the company of other rabbits. It is becoming widely accepted by welfare organisations that pet rabbits need a companion of their own kind for their welfare to be best met (there are occasional exceptions to this rule). We would urge anyone considering taking on rabbits as pets to view them as an animal that should wherever possible be kept in at least pairs.
As territorial animals it is very important that any rabbit introductions are undertaken very carefully. It is recommended that all rabbits should be neutered prior to bonding (regardless of the combination of sexes). As a general rule a male/female mixed pairing is considered the most trouble free bond and is generally recommended. However, other neutered pairings, and groups are also possible (we keep our special needs sanctuary bunnies here in happily bonded neutered groups).
This page from the from the Rabbit Welfare Association provides an excellent summary of the basics: http://rabbitwelfare.co.uk/rabbit-care-advice/bonding-rabbits/
For more detailed bonding advice please read these excellent guides on the Action for Rabbits website (info courtesy of the Rabbit Crossing) and The House Rabbit Network website (article written by Suzanne Smith):
*If anyone is adopting a single rabbit from us as a companion for an existing lonely bunny we offer full support with the bonding process.*
Rabbits love rabbits!