26/08/2026
Every Dog Counts
📈 The maths behind lasting change
We start our series with a look at what Catch, Neuter, Vaccinate, Return (CNVR) means and the maths behind lasting change.
For CNVR to create lasting change, we need to reach enough dogs in a community. At Jai Dog, our goal is to neuter at least 80% of street and free-roaming dogs in an area.
We sterilise both female and male dogs because both play an important role in population growth:
♀ Female dogs: To prevent future unwanted litters.
♂ Male dogs: To reduce breeding behaviours and support a more stable, healthier community dog population.
Why does this matter?
✅ Sterilising one female dog prevents not only future litters, but the many generations of puppies that could follow. Over time, this can mean thousands fewer dogs being born into an already stretched environment.
Collectively, our teams neuter around 2,500 dogs every month, and by the end of 2026 we aim to have reached and treated over 70,000 dogs in Nakhon Nayok.
But CNVR is about more than reducing population growth. Every dog we reach is also vaccinated, helping protect dogs and communities from preventable diseases such as rabies.
🙏 It costs around £25 to sterilise & vaccinate one dog – about the price of a round of coffees – and it can change that dog’s life today, while helping prevent generations of future puppies from facing the same challenges.
Donate today and help us reach the next street dog in need.
If you'd like to learn more about how we estimate population, check out our blog post here: https://jaidogrescue.org/understanding-dog-populations-why-counting-dogs-is-the-first-step-in-a-cnvr-programme/
