User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4212769-20120311185820/@comment-5020152-20120727154400

Tigrex should be able to do something similar then. Tasmanian Tigers could open their mouths incredibly wide, so why can't Tigrex?

As for the jaw-breaking, maybe it has some kind of natural shock-absorber to prevent that. Tigrex is so similar to a dinosaur, and I've heard that many, many species had those.