There once used to be up to 10,000 grizzly bears roaming California, but they eventually disappeared from the state as humans ...

Resurrecting extinct animals is both “exhilarating and terrifying ... elephants have a two-year gestation period. If you mean 100-percent mammoth, with all mammoth genes and behaviors ...

Scientists revisited tracks made by a shorebird, a lizard, a cat-like predator and some sort of large herbivore at what is ...

BBC Bitesize takes a look at four animals that were believed to be extinct – until they weren ... weigh 100kg and has a life span of around 100 years. When a large fish with blue, scaly ...

A number of experts say that bringing back extinct animals will not solve any conservation problems and that efforts would be better spent trying to find ways to save current critically endangered ...