I am a cat person really, but my son has a dog and it is true, they behave just like people. He saves them, at first they are fractitious, then once they know they have a loving master, they become gentle and soft, though there was one he had, which never settled to strangers. His present one was used as a fighting dog (common amongst a certain section of the population)and found tied inside an outside toilet, starved and beaten. It is so funny, now he is soft as muck but barks like mad at any black people even outside the window and policemen (black uniform) He still hasn't forgotten!