Rabbits are social animals that benefit from living in bonded pairs, but introductions require careful management to establish stable relationships.
Rabbits living alone are chronically lonely - this is not anthropomorphism but a measurable physiological state. The welfare case for paired housing is strong and underpinned by evidence of reduced stress and increased positive behaviours in bonded rabbits. While bonding can be challenging, the ongoing welfare benefit of a stable pair bond vastly outweighs the temporary stress of the introduction process.