Many large, powerful pit bulls have been bred and trained to be aggressive. Because of their reputation, some cities have banned them and dogs that look similar. The New York City Housing Authority has prohibited certain breeds on its properties. Some jurisdictions have laws that require that pit bulls be euthanized. Unfortunately, several dog breeds look similar to pit bulls, and they can lose their lives, too.
Argentine dogos, sometimes called Argentine mastiffs, have muscular bodies and broad heads. Their eyes may be any color, and the rims should be black or pink. Normally they have a thick white coat. The owner must display leadership with these powerful dogs. Easily trained, they will guard the home but are gentle with children. They may become aggressive with strange animals unless socialized early.