All mammals: 1  Are vertebrates (which means they have a backbone The column of bones (spine) in the back of many animals. 2  It supports the body. 3  An animal with a backbone is called a vertebrate. or spine A stiff, sharp projection on an animal; another word for quill.
Television presenter. A presenter is a person who introduces or hosts television programs (or segments thereof such as an infomercial advertiser).
David Letterman is a television host and comedian. He hosts the late night television talk show, Late Show with David Letterman, broadcast on CBS. Letterman has been a fixture on late night television since the 1982 debut of Late Night with David Letterman on NBC.