New Jersey has experienced similar success since the inception of their state spay and neuter fund. There has been a 25% reduction in the number of dog and cat intakes and a 41% reduction in euthanasia since 1984. Additionally, the adoption rate has risen by 39%.
Sterilization of animals decreases not only the number of homeless and feral animals born each year, but it also decreases unwanted behaviors in animals, including roaming and aggression, which often lead to the surrender and euthanasia of animals. Intact animals make up a majority of the animals surrendered to animal control and animal sheltering facilities.