每年650万动物进shelter，约150万会被安乐死。不要繁殖，不要购买。

Shelter Intake and Surrender Pet Statistics - aspca

https://www.aspca.org/animal-homelessness/shelter-intake-and.../pet-statistics

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Facts about U.S. Animal Shelters: Approximately 6.5 million companion animals enter U.S. animalshelters nationwide every year. Each year, approximately 1.5 million shelter animals are euthanized (670,000 dogs and 860,000 cats).