What to look for in dogs adoption shelters?

Well, it really depends what type of adoption center. A pet store- NO! Most of these animals come from puppy mills or kitty farms.

Choose a really nice Humane Society with clean facilities that don't smell bad. Observe the animals behavior (do they act depressed or do they come to the cage front to greet you?) Ask the staff if you can hold the animal and observe how it interacts with you and the other people and animals in the room.