[troupo]

The thing is, you don't want to keep sterilizing 10k dogs a year indefinitely.

[samus]

If it's a step down from 100k, it's progress! Also, the numbers have been decreasing for a long time already, else Bhutan couldn't conclude that they are done.

[troupo]

They are not done. They claim they sterilized all the dogs. If they stop doing what they're doing even for a year, they'll have to do this again.

Sterilization alone doesn't work.

[samus]

I agree. Their numbers are either so low that it counts as "done", or they actually didn't encounter any for a certain amount of time. They must either continuously sterilize the small trickle of remaining strays or plan a follow-up campaign. Implementing low-cost tree registration of pets should also help.