Spaying and neutering rabbits: benefits and age

Neutering is one of the most impactful health decisions you can make for a pet rabbit. It prevents life-threatening disease in females, dramatically reduces aggression and territorial behaviour in both sexes, and is essential for successful bonding between rabbits.

Why neutering is especially important for female rabbits

Unspayed female rabbits have an extraordinarily high risk of developing uterine cancer. Studies show that by age 4–5, approximately 50–80% of unspayed female rabbits develop uterine adenocarcinoma (uterine cancer). This is not a distant risk — it is a near-certainty for most does that are not spayed.

Additional health benefits for does:
- Eliminates false pregnancy (phantom pregnancy), which can cause distressing nesting behaviour and milk production
- Prevents pyometra (infected womb), which is rapidly fatal
- Eliminates uterine aneurysm (rupture risk during reproduction)
- Reduces mammary tumour risk

Benefits of neutering for male rabbits (bucks)

- Prevents testicular cancer
- Dramatically reduces spraying (intact bucks spray urine to mark territory — the smell is extremely pungent)
- Reduces circling, mounting, and aggressive lunging behaviour
- Makes bonding with another rabbit significantly more successful
- Eliminates risk of reproductive-related aggression

Best age for neutering

- Females: 4–6 months, once the uterus is mature enough for safe surgery. Some vets prefer 6 months.
- Males: 3.5–4 months, once the testicles have descended. Spraying and mounting can begin early, so earlier neutering is often preferable.

Risks of the procedure

Rabbit anaesthesia carries a higher risk than in cats or dogs because rabbits are more sensitive to anaesthetic agents and more prone to post-operative GI stasis (gut shutdown after stress and fasting). Choosing a rabbit-experienced vet significantly reduces this risk:
- The vet should use rabbit-appropriate anaesthetic protocols
- Fasting should be minimal (2–4 hours maximum) — do NOT fast a rabbit overnight before surgery
- The rabbit must be eating and producing droppings within hours of waking from anaesthesia

Post-operative care

- Keep warm and monitor closely for the first 24 hours
- Offer favourite foods and hay immediately on return home
- Pain relief is given by your vet — do not skip doses
- Use Flovvi to track the surgery date and follow-up appointment