Their discoveries could even help explain why these giant species went extinct while the grey and red kangaroo have continued to thrive. Professor Gavin Prideaux, co-author of the study ...

"That left a big void in our program and in our hearts," the keeper in the clip above says of Dave's passing. Troody is set up to become the next red kangaroo ambassador at the Bronx Zoo.

Take a Red Kangaroo, double its size ... The result should vaguely resemble a Giant Short-faced Kangaroo, the largest kangaroo to have existed — and one of the strangest. The Giant Short ...