First of all, the Egyptians started the dog as man's best friend. A great helper and protecter of their master. If a human has a strong relationship with a dog, the dog would sacrifice to protect them, as if a mother and child.
Moving along, dogs are a skilled worker. In many cases, dogs will retrieve things. To a shot down duck or a baby trapped. They will listen to their master for instructions and and do a certain task. Many dogs are used to herd sheep or farm animals.
