Skip Hollandsworth reports on how a pair of undercover cops infiltrated the secret world of Houston dogfighting.

"We just figured it was piddly shit, something for the local animal-control officers."

Then they started Googling.

"Nothing is slowing these guys down, absolutely nothing," the informant said. "They make Michael Vick look like a pussy."

Manning and Davis had seen their share of homicide victims and had been in a few bloody fights themselves, but they had never witnessed anything like this. They left as quickly as they could and drove to the nearest bar, dog blood still on their boots. "What the fuck have we gotten ourselves into?" asked Manning.

"My dogs were great dogs. They were beautiful, strong dogs. Oh, man, they were beautiful."

(For the full article in four parts, see 1, 2, 3, 4.)

Robert McNamara:

In order to do good, you may have to engage in evil.

Michael Tomasello:

Human beings do not like to think of themselves as animals.