Any dog of substantial size can be “a dangerous dog”. I have owned two American Bulldogs and 1 “pit bull” and they were all well-trained and probably overly fri

Any dog of substantial size can be “a dangerous dog”. I have owned two American Bulldogs and 1 “pit bull” and they were all well-trained and probably overly friendly. My cat has done more damage to me and to the dogs. The only dog that isn't potentially "potentially dangerous" are probably ones like the small breeds like chihuahuas and Pekingese. It really is 90% training/how-they're-raised and 10% genetics. Don't get a dog unless you can make him/her a part of your pack/family. Cats are much better if you just want a pet to chill with.