LOL! I think this one is true, because I've actually seen it happen - a large dog deciding it wanted it's own puppy (or kitten, or any other animal) and just picking it up and bringing it home. It always reminds me of bringing animals home and saying "it just followed me - can I keep him?" Hehehe. I knew he wouldn't hurt the smaller dog, but it was kind of funny. :)
It was just like that... I want that puppy! Can I keep him? LOL