A ground-breaking science firm that brought back the dire wolf revealed its extraordinary plans to reintroduce more extinct ...

As with other prehistoric animals on this list, it took scientists a while to understand the full picture of these ancient animals. Deinosuchus fossils were originally classified under the genus ...

From the tiniest hummingbird to the prehistoric-looking California condor ... and other techniques are available to address many human/bird conflicts. Other terrestrial animals exploited by humans ...

In prehistoric North America ... these sloths were one of the strangest animals of the ice age. They weighed as much, or more, than the short-faced bear at 1 tonne and stood 3 metres tall ...

Some animals have jaws so powerful they can break ... You might be surprised by some of the names on this list. The great white shark's serrated teeth are designed to see through flesh.