Adopting adult dogs. When it comes to dog adoption, many people ignore adult dogs. This is unfortunate because adopting an adult dog will mean that you won’t have to house train a dog. Their mental state and personality are also already developed. After only a few days, it’s easy for a shelter to know which dogs are cuddly, which are friendly with other dogs, which like other pets and how they react to different situations. Unfortunately, due to the large amount of adult dogs for adoption, it’s more likely that they may end up euthanized if they can’t find a home.