Do Rabbits Need a Companion? The Case for Pairs

The question of whether a rabbit needs a companion is not a matter of preference or convenience — it is a welfare question with a clear scientific answer. Rabbits are obligately social animals. In the wild, European rabbits (Oryctolagus cuniculus) live in complex social groups of up to 20 individuals, with established hierarchies, social grooming relationships, and lifelong companion bonds. A single rabbit kept without meaningful social contact is not living a full life.

What the Science Says

Multiple peer-reviewed studies on rabbit welfare have found measurable differences between solitary and socially housed rabbits:

• Cortisol levels (a stress hormone) are consistently higher in solitary rabbits than in bonded pairs
• Positive behaviour frequency — binkying, playing, social grooming — is significantly higher in bonded pairs
• Stereotypic behaviours (repetitive, purposeless actions like bar-chewing or circling, indicating psychological distress) are more common in solitary rabbits
• Cognitive performance in enrichment tasks is better in socially housed rabbits

The Rabbit Welfare Association & Fund (RWAF), the PDSA, the British Veterinary Association (BVA), and the House Rabbit Society (HRS) all recommend that rabbits be kept in pairs or groups as a standard welfare provision.

What Companionship Looks Like

When two bonded rabbits are observed throughout the day, the depth of their social lives becomes apparent:

• They synchronise activity — eating, exploring, and resting at the same time
• They mutually groom — particularly around the head and neck, areas a rabbit cannot reach alone
• They sleep in contact — touching sides or piled together for warmth
• They play together — chasing, mock-fighting, exploring together
• They comfort each other during stressful events — a bonded companion physically reduces the stress response in a rabbit more effectively than human presence

Can Humans Substitute for a Rabbit Companion?

Human interaction can partially supplement social needs but cannot fully replace another rabbit for several reasons:

1. Communication — rabbits communicate in subtle ways (body position, scent, physical contact) that humans cannot replicate
2. Time — a bonded companion provides continuous social presence; most humans cannot provide more than a few hours daily
3. Species-appropriate interaction — mutual grooming, sleeping in contact, and play are only possible with another rabbit
4. Vulnerability sharing — rabbits take cues about safety from each other; a bonded companion genuinely reduces chronic stress in a way a human cannot

If you genuinely cannot keep two rabbits (financial constraints, space, allergies in the household), acknowledge that your solitary rabbit will require significantly more human interaction time — ideally several hours daily of active supervised free-roam — to partially meet their social needs.

Grief in Rabbits

The evidence for grief-like responses in rabbits when a bonded companion dies is substantial. Bereaved rabbits commonly show:

• Loss of appetite, sometimes severe enough to require veterinary intervention
• Lethargy and reduced activity
• Searching behaviour — looking for the missing companion
• Increased thumping and anxiety
• Depression-like states lasting days to weeks

This is not anthropomorphism — these are measurable behavioural changes indicating significant psychological distress. If your bonded rabbit loses their companion, monitor them closely for health impacts and consider rebonding when appropriate.

Introducing a Second Rabbit: Key Points

If you’re considering getting a companion for your rabbit, the process requires care:

• Both rabbits must be neutered or spayed before bonding — this is non-negotiable
• The most naturally compatible pairing is neutered male + spayed female
• Never simply place two rabbits together — this will result in fighting. Follow a structured bonding process on neutral territory
• Allow 4–6 weeks after neutering before starting introductions (hormones persist)
• The full bonding process typically takes 2–8 weeks of daily sessions

For a complete guide to the bonding process, see our detailed article: How to Bond Two Rabbits Successfully.

The Single-Rabbit Reality

If you already have a single rabbit and a second is genuinely not possible, maximise their welfare by:

• Ensuring at least 3–4 hours of supervised free-roam time daily (more is better)
• Providing varied enrichment that changes regularly
• Interacting actively during free-roam rather than being in the same room on your phone
• Scheduling consistent interaction times so the rabbit can predict social contact
• Considering whether a bonded pair in future is achievable

The RabbitCare App

The RabbitCare App (free on Android) includes a bonding diary feature where you can track introductions, note session outcomes, and monitor the welfare of both rabbits during the bonding process.

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References & Sources

1. RWAF — “Rabbit Companionship” — rabbitwelfare.co.uk
2. House Rabbit Society (HRS) — “Social Needs of Rabbits” — rabbit.org
3. Schepers, F. et al. (2009) — “Behavioural indicators of positive affect in domestic rabbits” — Animal Welfare, 18(3)
4. Edgar, J.L. & Paul, E.S. (2018) — “Identifying positive states in rabbits” — Applied Animal Behaviour Science
5. Meredith, A. & Lord, B. (Eds.) (2014) — BSAVA Manual of Rabbit Medicine, BSAVA