Whats the limit on hiw fast you can catch and sterilise them? Neither sounds particularly difficult.
They claim to have sterilised 150000 dogs. At the beginning of the programme, you could reasonably assume that every stray dog you see needs to be processed. Later on in the programme, you'll be releasing a lot of dogs that have already been processed, which seems like a lot more effort for the last 10% compared to the first 10%.
In these programs it is standard to mark the animal in some way. In NYC, for instance, you clip the top of one ear of a cat after it's been processed.
So you catch ten animals, immediately let go any ones that have been marked, process the last one or two -- still more effort to catch, but less effort to treat.
Fertility control alone: 12% to 40% population decrease. More effective over longer time spans (up to 20 years)
Culling alone: Effective in rapidly reducing population short-term, population replaced through compensatory breeding or migration from other locations
https://etheses.whiterose.ac.uk/27935/1/Smith_LM_Biology_PhD...
Combined CNR and responsible ownership targeted several flows into and between the dog subpopulations: it prevented the street dog population from increasing through births and abandonment, and it increased the adoption of dogs from the shelter dog population to the owned dog population. This combined method had a synergistic effect: neither CNR nor responsible ownership applied in isolation was as effective at reducing street dog population size
The key result of this thesis is that methods targeting multiple sources of population increase, such as combined CNR [capture-neuter-release] and responsible ownership campaigns, will be most effective at reducing free-roaming dog population size
Do you understand this thread is about Bhutan? It's a pretty poor country (source below) where not that many people think of buying a dog and then abandoning it.
https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(PPP)...
