Excited alligators do more than thrash—they can spin like wound-up rubber bands ... and it's six feet [1.8 meters] thick." Since Bakker's been theorizing about dinosaurs for more than a quarter ...

Long, muscular legs, hollow bones, and clawed feet would have allowed this lightweight dinosaur to outsprint or outmaneuver most of its predators. Lesothosaurus likely died out by the mid-Jurassic ...