Henry and Emma are ready for their biggest challenge…facing Henry's archenemy, Scooter. Cesar immediately integrates Scooter into the pack. "The closer they get, the more friendly they become," he says. Cesar walks with Henry, Emma and Scooter without any barking or fighting.

Now it's Nate's turn…and all three dogs are totally under control. "I'm being the pack leader," he says, holding the leashes of Scooter, Henry and Emma.

"And what does it take to be a pack leader?" Cesar asks.

"The knowledge that you are the pack leader," Nate responds. "To live in the now."

"And what energy are you?" Cesar asks.

"Completely confident," Nate says.