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© Mark C. Milburn
Sonoran Pronghorn, © Mark C. Milburn
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Known as “prairie ghosts” because they are so elusive, there are about 100 of these animals left in the wild.
© Jonathan Ellis
Tropical Forest, © Jonathan Ellis (Creative Commons)
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Forests, which support a wide variety of plants and animals, cover one-third of the land on Earth.
© Brian Skerry
Right Whale, © Brian Skerry
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North Atlantic right whales are among the rarest marine mammals in the world.

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Gray Wolf, © Patrick Boening
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Mexican Gray Wolf, © Scott S. Warren / NGS
On the Blog
Years after their reintroduction to the wild, we need to take action to ensure a future for the world’s most endangered wolf.
Polar Bear, © William Bonilla
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