Every year thousands of Galgos (Spanish Greyhounds), Spains most mistreated breed, are abandoned or killed after outliving their usefulness. They are bred for hunting. Amigo is one of these abandoned dogs. A well-intentioned lady in the Netherlands adopted Amigo online from a Spanish shelter but it turned out not to be a great match. She wasn't a strong leader and Amigo became aggressive on the leash; he attacked several neighborhood dogs and had to wear a muzzle when being walked.