Fire Board dispatched companies to 9 East Lynbrook ave in Collingdale for the dwelling fire with possible entrapment. P/D arrived reporting heavy smoke from the dwelling, all occupants out with the acception of a dog that was still inside. companies arrived to heavy smoke from a 2 story eor dwelling with heavy smoke pushing. They had heavy fire in the basement with extension into the 1st floor. Crews led off with numerous handlines and made a quick knock on the fire. Extensive overhaul was to be done with the amount of fire they had in the dwellings basement & 1st floor. Unfortunately, the dog was later found doa in the home. Animal control was o/s to take care of the dog. Ems transported 2 F/F's and 1 occupant of the home.