A Madison fire crew helped a dog that was badly injured in a fall from a rooftop Saturday, officials said. The Madison Fire Department said a passerby reported hearing the cries and whimpers of a dog trapped on the roof of a house in the 100 block of North Butler Street at 5:23 p.m. When firefighters arrived four minutes later, the dog had already jumped or fallen off the roof and had badly broken its leg, according to the report. There were no animal resource officers immediately available, so firefighters brought the dog aboard the fire engine and took it to UW Veterinary School for emergency medical attention.