We adopted Toby from the Humane Society. They had rescued him from an abusive background where he had been held by an animal hoarder. He was abused and neglected.
Toby is the most human-like of our three dogs. He almost looks human in this picture. He is a Catahoulan Leopard Dog.
He also is fairly good at saying, "Hello," although he doesn't actually form the 'l' sound. In my wife's work teaching life skills to challenged adults, she has used him to help encourage people to speak. They are more comfortable saying "hello" to friendly Toby than to humans sometimes.
Catahoulans are supposed to be somewhat aggressive, bred to work with cattle, but Toby is all sweetness and fun.