The first thing I would like to share on this wonderful movie Monday is a very old looking stop motion looking documentary called March of the Dinosaurs. I kind of wish it was stop motion and old, but it is from the past summer. At any rate, there are many parts with Gorgosaurus in it, but I think starting with this night time chase is a good place. Other links to the full episode show up at the end, so feel free to watch it all of course, afterwards.
This other video shows Pete Larson describing the injuries found on the Gorgosaurus from the Children's Museum of Indianapolis using a cast replica in Houston. Pretty self explanatory and it shows that Gorgosaurus was a resilient old beast: