[QUOTE=Perfect10;8543333]
Puppies and kittens freeze to death in the North. Not necessarily so in the South. That goes a long way towards reducing the pet population of the North.[/QUOTE]
I doubt that’s it. Even in warmer months, you just don’t ever see stray dogs. Feral cats some and some strays, but the coyote population and fishers aren’t conducive to longevity. The shelters still gets loads of locally owner surrendered litters of kittens, but the shelter near me has pushed their in house low cost spay/neuter and is seeing dividends from it. Local owner surrendered litters of puppies are rare.