Three of the world’s nine tiger subspecies became extinct last century, and many scientists believe a fourth, the South China tiger, is already functionally extinct. The National Zoo ...

Their biggest threat: humans. No trace of the wild South China tiger, Panthera tigris amoyensis (critically endangered, possibly extinct in the wild), has been seen for more than a decade.

South China tiger, brown-eared pheasant, red-crowned crane, red ibis, white-flag dolphin and Chinese alligator. The black-and-white giant panda weighs on average 135 kg and lives on tender bamboo ...