One major thing that stops people from adopting a dog from the shelter is the worry that their dog will have hidden health or behavioral issues. However, according to Kenny Lamberti, vice president of companion animals at the Humane Society of the United States, “the vast majority of dogs that would come from a shelter are evaluated for behavior and health.” And not only do shelters properly analyze each and every animal that comes into their care, but they do so in a manner that is more thorough than most breeders and pet shops.