加州では、ペットショップで、捨てられた動物や虐待された動物しか取引できないことに。

A rescue dog is a dog that is rescued from a possible euthanasia after being found as a stray, a dog that has been saved from an abusive or neglectful home by an animal rescue organisation

野犬（やけん）とは、飼い主がいない犬である。野良犬（のらいぬ）とも呼ばれる。

California becomes the first state to require pet stores to sell rescue animals - LA Times

California becomes the first state to require pet stores to sell rescue animals
Mina Corpuz
(Courtney Case / Associated Press)
(Courtney Case / Associated Press)
California will be the first state to require pet stores to sell rescue animals under legislation signed by Gov. Jerry Brown on Friday.

Starting in 2019, pet stores will transition to selling dogs, cats and rabbits from shelters or adoption centers. Stores can be fined $500 for each animal for sale that is not a rescue.

加州では、ペットショップで、捨てられた動物や虐待された動物しか取引できないことにーーこれはいいんじゃない、日本でもそうすれば、と思うよ。