I've read somewhere else that pets do live longer in Europe. I don't know whether it's the diet (because many people at this side of the pond do feed kibble), so we'd need more information about the % of raw fed dogs in Europe vs. % of raw fed dogs in US and Canada. However, spaying and neutering is definitely more rarely done over here than in the US. Most dogs that are spayed or neutered are stray or former stray dogs that are being adopted. People choose to spay the female dogs but they usually wait for the first or second heat cycle before they do it, and most males are kept intact.