The thing about discipline is that people misunderstand the word discipline. People think discipline in the dog world is punishment. Discipline is how you achieve what you want to achieve in life. You have to be very focused, very disciplined, very consistent, very diligent. All of those things.
Cesar MillanYou can also hurt a dog if it's insecure, if a dog is nervous and then you try to pet him, you can make him more nervous. It's not just the aggressive dogs that you can get hurt. It's also the dogs that you can actually hurt. It works both ways.
Cesar Millan