These animals redefine life as we know it
Rare and maddeningly elusive, the "ghost cat" tries to give scientists the slip high in the mountains of Montana
Before the captive animals can go free, they have to hone their killer instinct at a conservation center in Colorado
Lizard moms wear their egg quality on their sleeves – or at least on their necks
Flamingos, T. rex Tails, Burmese monkeys and more...
Now numbering in the millions, these shockingly destructive and invasive wild hogs wreak havoc across the southern United States
Testing the myth
Animals as common as goats, deer, rabbits or mice can have a devastating effect on other wildlife
In 2007, scientists from the USGS said that if humans didn't cut greenhouse gas emissions, two-thirds of the world's polar bears could be gone by 2050
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