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Close to extinction: Critically endangered animals

Photos Logo Photos | Slide 1 of 38: Malayan Tiger prowling

Many animals are on the brink of extinction due to habitat loss, poaching activities and natural causes. The International Union for Conservation of Nature (IUCN) maintains the IUCN Red List that tracks critically-endangered species and those that are already extinct in the wild. As we mark Earth Day on April 22, we take a look at some of the animals that are struggling for survival.

© enciktat/Getty Images
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