Sugar the cat had no broken bones or cuts, just some bruising on her lungs after the fall from a window owner Brittany Kirk had opened to enjoy the recent unseasonably warm weather.
The Animal Rescue League estimates Sugar fell between 150 and 200 feet.
Kirk tells WBZ-TV she thinks Sugar used up "one or two or maybe eight" of her nine lives.
Veterinarian Hugh Davis says in falls from high places, cats splay their legs in a "flying squirrel position" which slows their descent.
Kirk calls Sugar's survival a "miracle" and says building management has since installed a screen in her window.