There are a total of eight species of pangolin on our planet. Pangolins, also known as scaly anteaters, are unique creatures that are covered in hard, plate-like scales. They are insectivorous (feeding on insects) and are mainly nocturnal.
Balloon framing, framework of a wooden building in which the elements consist of small members nailed together. In balloon framing, the studs (vertical members) extend the full height of the building (usually two stories) from foundation plate to rafter plate, as contrasted with platform framing, in which each floor is framed separately.
The first building to use a steel frame in St. Louis was the Wainwright Building, a 10-story office building and one of the first modern skyscrapers. The building, which was designed by Louis Sullivan and Dankmar Adler, illustrates Sullivan's principle of form follows function.