Man, the most intelligent creature on earth vs. Mammoth, the largest elephant ever.

T-Rex, the king of the dinosaurs vs. Triceratops, the three horned terror.

Smilodon, the saber toothed cat vs. Mega Lion, the largest feline ever.

Megalodon, king of sharks vs. Mosasaurus, the aquatic terror of the Cretaceous.

Therizinosaurus, the giant claw vs. Tarbosaurus, T-Rex's cousin from the East.

T-Rex, the king of the dinosaurs vs. Spinosaurus, the longest land predator ever.