WELLESLEY, MASS.: A coyote approached a mother and her two children in their backyard. As the woman picked up her baby, the coyote nipped the leg of her other child, a 2-year-old girl. This wasn't the first backyard invasion by a coyote. Days before this incident, a coyote in nearby Newton, Mass., charged into a yard where children were playing on a swing. It made off with a small stuffed animal.