10/23/2026
😳🤯 An Option to Neutering I Wish I’d Known About Sooner!
Did you know there is a temporary alternative to surgical nurturing that may help explore the influence of testosterone on certain behaviors in male dogs?
It’s called chemical castration, and it’s something we recently discussed in my Canine Behaviourist Diploma studies.
One method involves a small implant containing deslorelin (commonly known as Suprelorin®), which temporarily suppresses testosterone production.
🐾 Why might this be interesting from a behavior perspective?
During adolescence, male dogs experience hormonal changes that may influence certain behaviors.
These can include:
🐾 Increased interest in females
🐾 Mounting and urine marking
🐾 Roaming or difficulty disengaging from sexually motivated distractions
🐾 Some forms of male-to-male conflict or competitive behavior
But here’s where it gets interesting…
Not every behavior we find challenging is driven by testosterone!
Fear, anxiety, frustration, pain, learning history, genetics, and the dog’s environment can all influence behavior.
And hormones don’t operate independently of these other factors.
Reducing testosterone may improve certain behaviors, have little effect on others, or potentially make some behaviors worse.
Something I learned years ago through the School of Canine Science has stuck with me.
Castration doesn’t necessarily reduce aggression and, for some dogs, may actually be associated with increased fearfulness, anxiety, and aggression.
This is particularly important to consider when a dog is already struggling with confidence or displaying fear-based behaviors.
Testosterone isn’t simply an aggression hormone. It has a complex relationship with behavior, and removing it doesn’t automatically create a calmer or more confident dog.
Research on this subject continues to evolve, and findings are sometimes contradictory.
🔎 So why consider chemical castration instead of immediately opting for surgery?
In some cases, temporary hormonal suppression may provide an opportunity to observe how an individual dog responds to reduced testosterone before making a permanent surgical decision.
If a particular behavior improves, that information may help guide discussions with the veterinary team.
If it doesn’t improve, that is useful information too!
However, this isn’t a perfect trial run. A dog’s response to chemical castration cannot guarantee the same outcome following surgical castration.
⚠️ There are some important considerations!
⚠️ Initial hormone surge: Testosterone can temporarily increase following implantation before suppression occurs. This can initially intensify some testosterone-related behaviors, potentially including aggression.
⚠️ Not an immediate effect: Hormonal suppression takes time. This isn’t something that changes a dog’s behavior overnight.
⚠️ Individual differences: The degree, duration, and behavioral effects of hormonal suppression can vary between dogs.
⚠️ Not necessarily completely reversible: Although intended to be temporary, the timing of recovery varies and a return to fertility is not guaranteed in every dog.
⚠️ Behavior may not improve: Some behaviors are learned, emotionally driven, or influenced by multiple factors. Altering hormones doesn’t necessarily change those underlying influences.
⚠️ Age and development matter: The dog’s physical and behavioral maturity, overall health, and individual circumstances must be considered. This is particularly important when discussing hormonal interventions during adolescence.
A personal reflection… 💙
I wish I had known more about this possibility when SMUDGE was younger, before the challenges between him and LOKI developed.
Would it have changed anything?
I genuinely don’t know.
And I’m certainly not suggesting that testosterone was the only cause of their difficulties, but I do believe it played a role…
This information would have given us another avenue to explore with our veterinarian while we were trying to better understand what was contributing to the situation.
Sometimes, learning something new doesn’t provide an answer. It simply introduces another question worth asking 🤔
And I think that’s valuable too.
Speaking of learning… 📚
Yesterday marked ONE FULL YEAR of working toward my Level 6 Diploma in Clinical Canine Behaviour through The Canine Behaviour College and Behavet! 🧠🐾
One year of learning, questioning, challenging what I thought I knew, and occasionally having my brain completely overloaded with information! 😅
Still learning. Still asking questions. Still discovering just how complex behavior really is.
🐾 Why am I sharing this?
I work with many adolescent male dogs and their people, and the question of neutering comes up regularly.
Should we? Shouldn’t we? When is the right time? What might the benefits or potential consequences be?
As a coach, I’m happy to explore these questions, share information, and help clients consider the bigger picture.
But ultimately, I encourage people to do their own research and discuss their individual dog’s needs with their veterinarian before making these decisions.
Informed decisions are important, especially when they may have lifelong implications. 💙
One final and very important point!
This post is intended to share information, NOT to recommend chemical or surgical castration as a solution to behavior challenges.
If you’re considering either option, please discuss the potential benefits, limitations, risks, and your dog’s individual circumstances with your veterinarian. A veterinary behavior specialist may also be helpful when aggression, fear, or anxiety are involved.
There is rarely one simple explanation for behavior, and there is certainly no one-size-fits-all solution. 💙🐾
