Siamese crocodiles hid in plain sight

Cambodia's Phnom Tamao Wildlife Rescue Center houses dozens of crocodiles, most hybrids of the rare Siamese species (Crocodylus siamensis). What no one knew until DNA work was done was that half were not hybrids. They were the world's largest captive population of pure Siamese crocodiles, a highly endangered species. Conservationists are thrilled... and a little embarrassed.