Steven Vogel has written another book, bless his heart: Prime Mover: A Natural History of Muscle. He has written several books that focus on the engineering aspects of biological systems, that is, thinking of organisms in terms of their physical design. This is going to be one of the great themes of the 21st century, and he is a real pioneer in the field. Look for lots more books on this theme. In the meantime, considering buying Cat’s Paws and Catapults.