The Dinosaur Heresies: New theories unlocking the mystery of the dinosaurs and their extinction

Blurb

The Dinosaur Heresies: New Theories Unlocking the Mystery of the Dinosaurs and Their Extinction is a 1986 book that was written by Robert T. Bakker.
The book sums up the extant evidence which indicates that dinosaurs, rather than being cold-blooded and wholly lizard-like, were in fact warm-blooded, agile creatures more similar to modern birds than to lizards or other reptiles. Although controversial on publication in 1986, the passage of time has proven Bakker correct in many respects, and much of Dinosaur Heresies now represents the prevalent view in paleontological circles.
The main arguments used to show that dinosaurs were warm blooded are:
Almost all animals that walk upright today are warm-blooded, and dinosaurs walked upright.
The hearts of warm-blooded animals can pump much more effectively than the hearts of cold-blooded animals. Therefore, the giant Brachiosaurus must have had the type of hearts associated with warm-blooded animals, in order to pump blood all the way up to its head.
Dinosaurs such as Deinonychus led a very active life, which is much more compatible with a warm-blooded animal.