Did you know there were massive animals that existed before and after the dinosaurs Now just imagine if they appeared in the modern world. Couldn't happen could it These monsters died out millions of years ago. But what if they hadn't and...
the 8 tonne supercroc Sarcosuchus arrive in an underground station
Megalania a 7-metre lizard knocked on your door looking for a meal
Paraceratherium the largest land mammal ever came lumbering through New York City
