Yea, back in my younger and single days a dog adopted me. She was a doberman and shy. She just showed up on my front porch. I gave her food and water and left he on the porch in case someone was looking for her. After two days and the mail man really not liking a doberman on the porch I put her the back yard and then brought her inside.
After the first vet visit I realized how expensive a free dog can be.
She was real smart and easy to train. In no time she turned into a Will Rogers dog. She never met a person she did not like. Most people are afraid of dobermans. She loved to play with tennis balls and the neighborhood kids learned she was fun. They would knock on the door and ask if they could play with her and I would send them to the back yard. She would run around for hours in the back yard.
One night at about 2:30 AM someone was pounding on the front door. She started barking and growling at the door and making noises that would have made me wet my pants if she looked and me and made those sounds. Whoever it was left without incident. It was right after that I bought my first handgun. I realized all I had to defend myself was a barking dog and a butcher knife. Thankfully no intruder has ever tried to test my marksmanship by entering without permission.