Robert Crais said this quote

Scott walked away and did not look back. They knew Maggie would try to follow him, and she did. In her world, they were a pack, and the pack stayed together.Maggie whined and barked, and he heard her claws scrape the tarmac like files. Budress had cautioned him not to look back or wave bye-bye or any of the silly things people did. Dogs weren't people. Eye contact would make her struggle harder to reach him. A dog could see your heart in your eyes, Budress told him, and dogs were drawn to our hearts.