Animal being euthanized in animal shelters.

Animal shelters aren't always good. The no kill shelters are better. What they do is, when an animal from a shelter isn't adopted in a certain amount of time, they kill them (put them to sleep). I think its so wrong. I did a year long project on it for school. I want it to stop, and have all animal shelters, be no kill! In the last decade over 1 million were killed. Help prevent this! Save their lives, you are their only hope.