I love dinosaurs, and I really enjoyed this book. The criticisms I have are that it was on the short side, it could have been better organized, and I feel that he was too focused on chickens. I have heard of other bird species retaining some primitive characteristics, for example (if I remember correctly) hoatzin chicks having claws on their wings. He doesn't mention anything like this, but I feel that he should have because it is relevant to his argument. Other than that I found it very interesting. When he talks about creating a dinosaur, it isn't what you expect. He also goes into some of the science, which I think is easier to understand if you have at least some science background.