Statistically speaking, two dog breeds are well known for their calm temperament. Golden Retrievers and Labrador Retrievers are among the friendliest and most sociable breeds who crave human companionship and work-related partnerships. Even though labradors have a bite of 236 PSI, similar to that of a Pitbull, they were bred to have notably soft mouths to prevent penetrating the fowl they capture. Retrievers know that their bite is not fatal, so they rarely attempt it unless prompted by danger.