Killing monarchs
"As a special agent for the US Fish & Wildlife Service, Sam Rivers has researched and studied a variety of animals. He's visiting sixth graders at Hopkins Elementary to share photographs of the monarch butterfly-and he's brought along his drug-sniffing wolf-dog, Gray, to give students a demonstration of his partner's remarkable skills. Gray finds a sample drug packet, hidden by Sam, but that's not all. The wolf-dog keeps following his nose, leadi...