It should be noted some studies have established mandatory spay / neuter laws have not reduced shelter intake and
euthanasia rates, that it is preferable to have
government funded voluntary spay / neuter services together with aggressive adoption
programs.
In 2003, Costa Rican
government outlawed
euthanasia as a form of animal population control so instead, this nation relies on high - volume, low - cost spay and neuter
programs to keep numbers of unwanted animals at manageable levels.