It's no secret that dogs are man's best friend. Their unconditional loyalty and genuine love render them the best companions out there. However, our canine friends can also form unbreakable bonds with one another. This heartwarming animal rescue story of a pit bull and Chihuahua proves just how strong that bond can grow; a bond not even humans can understand. When an animal shelter tried to find a forever home for a young pit bull, she did something that blew all the volunteers away. Read here to find out what happened when the rescuers tried to separate her from her tiny best friend.