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Wildlife Defender

The bird that inspired Rio — declared extinct in the wild, now fighting back

A toad that vanished from Earth — and lives on in human hands

The world's rarest animal — fewer individuals than any other species, wild or captive

America's most endangered wolf — and a comeback story in progress

The world's rarest big cat — and quietly recovering

One population, one park — the most precarious large mammal on Earth

The Asian unicorn — one of the most mysterious large animals on Earth

The most successful hunter in Africa — and one of its most misunderstood

Ghost of the mountains

A genuine conservation success story