Humans are the only animals who will follow unstable pack leaders.

The more you think you have to use physical force to control life, the less you control life.

Calm assertive energy is the energy you project to show your dog you are the Pack Leader. Assertive does not mean angry or aggressive. Calm-assertive means always compassionate, but quietly in control.

With small dogs people don't reinforce the same behavior that they do on a larger dog. If you are a driver no matter what size car you have it doesn't matter. Same thing goes for any gender. All the rules are the same.

But just because a person goes to Harvard doesn't mean he's balanced when he graduates, and just because a dog knows how to obey doesn't mean he's balanced, either.

Bill Gates can't control a high-level-energy dog, because his energy is very low, very calm. Very intellectual. A dog doesn't see that as leadership.

All dogs can become aggressive, but the difference between an aggressive Chihuahua and an aggressive pit bull is that the pit bull can do more damage. That's why it's important to make sure you are a hundred percent ready for the responsibility if you own a 'power' breed, like a pit bull, German shepherd, or Rottweiler.