Will my dog be less aggressive after being neutered?
While male dogs who are neutered do experience an increase in aggressive behaviors right after the procedure, neutering can make them much less aggressive over time. In fact, neutering has bee proven to create a much happier and calmer male dog over time.
After neutering your dog, its behavioral changes may begin 6 weeks after the surgery. It includes reduced aggression, humping on female dogs and people, escaping, and roaming around. Male dogs can have different behavioral changes depending on their breed, age, and maturity.
While a dog's fundamental personality will not change after a spay or neuter surgery, there are some changes you might observe, including: Behavioral changes are more pronounced among neutered males. They're less likely to hump people, other dogs, and inanimate objects (though many persist).
Common misconceptions of neutering
It is widely â and falsely â believed that neutering âcalms a dog downâ. However, an adult or adolescent dog's basic temperament is relatively independent of testosterone, and neutering won't make any significant changes to his intelligence or personality.
If we have neutered our dog and notice they become aggressive, it does not have to be related to a behavioral problem. Some individuals return home stressed, disorientated and in pain. An aggressive reaction may simply be a valid reaction from a traumatic event.
Most working dogs (police, sheepdogs, gundogs) are not neutered as handlers feel they are less keen and energetic.
The traditional age for neutering is six to nine months. However, puppies as young as eight weeks can be neutered as long as there aren't other health problems. An adult dog can be neutered at any time but there is a larger risk of complications.
Behavioral Changes in a Dog After Being Neutered
Removing the testicles removes the largest source of testosterone in the body. This results in a decrease in sexually driven behaviors in your dog: urine marking, escaping to seek female dogs, and aggression toward other male dogs.
Is training an aggressive dog possible? Yes. Aggression in dogs, whether it be toward a dog's owner or other dogs, is a serious behavior that should be adjusted with the help of a professional dog trainer.
Treatment. It's important to keep in mind that there is no such thing as a cure for aggression. Aggressive behaviors are managed and reduced through proper treatment with a veterinary behavioral professional. It's also essential to understand that aggression is a behavioral problem, not an issue of obedience.
What triggers dogs to be aggressive?
Aggression in dogs can be due to guarding territory, resources, or a family member; fear; frustration; prey drive; or pain. In all of these situations, a dog may be pushed too far and can transition quickly from reactive, fearful, or guarding behaviors to being aggressive.
In general, however, neutering will have no effect on your dog's personality, but it may influence his mood and make some behaviours more or less likely.

Neutering your male dog not only helps to control the pet population, but it also has valuable behavior and medical benefits. It can minimize numerous unwanted behaviors, prevent frustrations, and improve your dog's quality of life.
Generally, spaying or neutering your pet will not change its personality. If there are any effects on behaviour, they tend to be positive (reducing unwanted behaviour). Spaying or neutering will not change your pet's affection level or playfulness.