Danbury firefighters helped a dog yesterday who was overcome by the heat. Members of the Danbury Fire Department have been training with a new Polaris Utility Terrain Vehicle. Yesterday they were on some trails at Tarrywile Park, where there have been numerous calls for assistance. While training, a crew came across a hiker whose dog had become overheated and needed assistance. The firefighters got some of their drinking water and assisted the dog until he was healthy enough to make it back to the car.