Roughly half a year since the town hired sharpshooters to hunt and kill aggressive coyotes, one wild canine mauled and killed JJ, a 15-year-old silky terrier, while he was walking on a leash on Colby Way.JJ’s owners Chris and Adriana Del Dotto were walking their 11-pound terrier in front of their house on Colby Way on Memorial Day weekend. They heard JJ scream, and turned around to find that a coyote had their pet in its jaws.The Del Dottos brought JJ to an emergency animal hospital, where the dog died only a few hours after the attack. In the Facebook group “Nahant Coyote Victims,” Adriana described the coyote as being “extremely aggressive,” and unrelenting after she picked up her dog.