rabbit testicular cancer and unneutered male issues
unneutered male rabbits develop testicular tumors. the rate isn’t as dramatic as uterine cancer in does (80% by age 4), but it’s still significant. neutering prevents it.
if your buck is intact and over 3 years, this guide is for you.
the risk profile
testicular cancer in rabbits:
- less common than uterine in does
- still significant: estimated 10-15% of bucks over 5
- typically benign but can metastasise
- benign types still cause issues (size, swelling)
the prevention
neutering at 4-6 months:
- removes entire risk
- standard SG vet practice
- our spaying cost guide covers neutering too
- recovery 7-10 days
the symptoms in intact bucks
watch for:
- testicle swelling (one or both)
- size difference between testicles
- visible mass
- changes in behaviour (less interest, aggression)
- weight loss
- urinary changes if mass presses on bladder
the diagnosis
vet workup:
- examination (palpation)
- ultrasound
- bloodwork
- biopsy in some cases
the treatment
surgical castration:
- removes affected testicle(s) and tumor
- standard procedure
- diagnostic + curative
- prognosis usually good
the recovery
- 7-14 days
- similar to standard neutering
- our post-op recovery guide
- monitor for normal healing
the SG vet approach
what to expect:
- consultation with confirmation of mass
- pre-surgical bloodwork
- surgery
- biopsy of removed tissue
- follow-up to confirm clear margins
the cost reality
surgery for testicular tumor:
- consultation + imaging: SGD 150-300
- surgery: SGD 400-800
- bloodwork: SGD 80-150
- pathology (biopsy): SGD 100-200
- total: SGD 700-1400
vs. preventive neutering at young age:
- routine: SGD 200-400
the senior buck consideration
senior bucks (5+):
- higher anaesthesia risk (our anaesthesia risk guide)
- often still safe with experienced vet
- bloodwork essential
- discussion of risk vs benefit
the SG-specific notes
three things relevant:
1. neutering culture
- most SG owners spay/neuter
- some breeders keep intact for breeding
- pet owners should neuter
2. exotic vet availability
- experienced exotic vets perform routinely
- our vet directory
3. recovery support
- AC essential during recovery
- post-op recovery best in cool dry environment
the behavior considerations
intact bucks may show:
- territorial aggression
- spraying urine
- mounting behaviour
- our spraying after spay covers similar in does
neutering reduces or eliminates these.
the bonded pair consideration
if buck is bonded to female:
- both should be spay/neutered
- bond often improves after both fixed
- some bonding work needed post-recovery
the alternative: hormonal management
rare, considered for high-risk anaesthesia bucks:
- some vets discuss hormonal management
- not the standard
- surgery preferred when safe
the other intact buck issues
besides cancer:
prostate issues
- less studied in rabbits than humans
- some chronic prostate inflammation
- managed surgically (full neuter)
urinary issues
- larger reproductive tract can cause urinary obstruction
- emergency in severe cases
testicular trauma
- intact testicles more exposed
- bonded fighting can cause injury
what owners often get wrong
three patterns:
- delaying neuter “until older.” older surgery is harder
- assuming intact bucks are fine. cancer risk real
- only addressing one testicle if both affected. full bilateral often safer
related reading
- spaying cost guide — also covers neutering
- anaesthesia risk — surgical concerns
- post-op recovery — home care
- uterine cancer in does — female counterpart
community-sourced information here is not veterinary advice. for any reproductive concern in a male rabbit, consult a licensed SG exotic vet.