Earlier this month, Sara Grant was inside her home in Sherman, Connecticut, a small town near the New York border. Her 2-year-old was upstairs. Her newborn daughter was in her arms. Suddenly, she saw her 4-year-old son, Gavin, running up the driveway, sobbing. A bear was close by. “I screamed louder than I had ever screamed before,” she said. Sign up for The Morning newsletter from the New York Times Grant’s golden retriever, Jake, leaped forward and chased the bear off the property, driving it