QUOTE : nostrils flickered and twitched. Her breathing pattern changed when she sniffed for a scent. Sniffing wasn’t breathing. The air she drew for sniffing did not enter her lungs. Sniffs were small sips she took in groups called trains. A train could be from three to seven sniffs, and Maggie always sniffed in threes. Sniff-sniff-sniff, pause, sniff-sniff-sniff. Budress’ dog, Obi, sniffed in trains of five. Always five. No one knew why, but each dog was different. Scott