Dogs Trust

Why neuter?


  • May encourage calmer, more predictable behaviour making the dog a more suitable family pet.
  • May help reduce aggressive and unwanted sexual behaviour, preventing fighting, mounting and destructive behaviour. Dogs that are neutered are also less likely to mark territory or stray!
  • Reduces the likelihood of strange behaviour in female dogs coming into heat/season (for about three weeks, twice a year).
  • Prevents male dogs desperately attempting to escape and seek out a local female dog in season.


  • Removes the significant health risks associated with pregnancy as well as the possibility of potentially fatal womb infections (pyometra).
  • Avoids the mess and inconvenience of seasons.
  • Reduces or removes the risks of some cancers in both male and female dogs (including testicular and mammary cancers).


  • Prevents the unnecessary costs of unplanned pregnancies and raising puppies.

Neutering leaflet October 2016 PDF 414 KB