Popular adopted breeds. Just as a person doesn’t necessarily need a purebred dog, they aren’t necessarily a bad thing. Whether a purebred, or mixed breed, these are very common options. Families often like dogs that are gentle, kind and protective. Golden retrievers, labradors, german shepherds and collies are all common choices when there’s young kids still learning how to be kind to dogs. Many people like dogs that look a bit more intimidating. Rottweilers, mastiffs and several hound breeds can look like they are intimidating and protect a house. Most of these breeds are actually very docile and love a good belly rub however.