A one-of-a-kind fossil shows that stegosaurs weren't quite the gentle giants some assume them to have been.
The fossil -- of the pubic bone of another Late Jurassic dinosaur known as Allosaurus -- shows clear evidence of a brutal attack by a stegosaur, according to the scientists who have been studying it.
18:48 Animal rights activists claim major win in Ringling Bros. closing17
15:28 Animal activists finally have something to applaud at Ringling Bros. circus: its closure17
14:04 Nowhere left to run away to: The final days of the circus15
05:02 Ringling Bros. and Barnum & Bailey Circus to close after 146 years13