I agree with most of the article. Small dogs are allowed to get away with things because people don't see the harm when the 3 pound dog "can't possibly inflict all that much damage". If they'd imagine they're same dog as 100 pounds then they might see that their dog could have seriously hurt somebody. There's personality issues as well though. My aunt has 4 chihuahuas and only 1 of them is friendly and the other three are some of the worst cases of aggression I've had to deal with. I recently dog sat and to get them outside I had to dump them out of their kennels and stand back. How did the 1 get friendly?