Come on people, this series is a joke. Yes some of the animation is cool but the biology and behavior if the animals is (very) loosley based on science... its more Jurasic Park than "documentary" and barely worth watching as entertainment. I'm a bit disappointed that Sir Attenborough signed on to this project. It's a bit cheap and continuously brings up the question: Other than entertaining 5 year olds, why do paleontologists actually have paying jobs? They are making 80% of this stuff up.