Match each of the animals to their close-up eyes to win the game. Too easy? Try a different difficulty level.
Through a project called Photo Ark, photographer Joel Sartore is visiting zoos around the world to snap pictures of all 12,000 species of captive animals. He hopes to use the photos to inspire people to save the planet’s most endangered animals.
Learn more about Photo Ark!
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Photo credit: Joel Sartore, National Geographic Photo Ark