There are still some shelters that euthanize sick animals while other are no-kill shelters.
I prefer the no kill . I wish there was a spaying neutering program or programs all over the US actually
Neutering
Neutering, from the Latin "neuter" ('of neither sex'), is the removal of an animal's reproductive organ, either all of it or a considerably large part. "Neutering" is often used incorrectly to refer only to male animals, but the term actually applies to both sexes. The male-specific term is castration, while spaying is usually reserved for female animals. Colloquially, both terms are often referred to as fixing. In male horses, castrating is referred to as "gelding
2.4 million healthy, adoptable cats and dogs are euthanized each year in the US because of a lack of homes. Animal protection advocates campaign for adoption instead of buying animals in order to reduce the number of animals who have to be euthanized. Many shelters and animal rescues encourage the education of spaying or neutering a pet in order to reduce the number of animals euthanized in shelters and to help control the pet population.
To help lower the number of animals euthanized each year, some shelters have developed a no-kill policy