Mountain gorillas that the Dian Fossey Gorilla Fund protects in Volcanoes National Park, Rwanda.
How many gorillas are left?
Western lowland gorillas are critically endangered, there are only about 175,000 in the wild.
00:46 - Source: CNN
Endangered animals 16 videos
Mountain gorillas that the Dian Fossey Gorilla Fund protects in Volcanoes National Park, Rwanda.
How many gorillas are left?
00:46
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Black rhinos being reintroduced into Chad
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TO GO WITH AFP STORY BY NICOLAS DELAUNAY
Sudan, the last known male of the northern white rhinoceros subspecies, grazes in his paddock on December 5, 2016, at the Ol Pejeta conservancy in Laikipia County -- at the foot of Mount Kenya -- that is home to the planet's last-three northern white rhinoceros.
As 2016 draws to an end, awareness of the devastation of poaching is greater than ever and countries have turned to high-tech warfare -- drones, night-goggles and automatic weapons -- to stop increasingly armed poachers. According to the International Union for Conservation of Nature (IUCN), at the African Black market, rhino horn sells for up to 60,000 USD (57,000 euros) per kilogram -- more than gold or cocaine -- and in the last eight years alone roughly a quarter of the world population has been killed in South Africa, home to 80 percent of the remaining animals. / AFP / Tony KARUMBA        (Photo credit should read TONY KARUMBA/AFP/Getty Images)
World's last male northern white rhino dies
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Vince was found by its animal caretaker, who is strongly attached to the animal and profoundly affected.
Poachers killed rare rhinoceros in French zoo
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In this picture publicly provided by the zoo Dvur Kralove and taken on Monday, March 20, 2017, in Dvur Kralove, a zoo keeper removes  a horn of  Pamir, a southern white rhino, as one of the safety measures to reduce the risk of any potential poaching attack. The zoo's decision follows the incident in the French Zoo Thoiry, where one of the white rhinos was killed by poachers for its horn in the beginning of March. (Simona Jirickova/Zoo Dvur Kralove via AP)
Czech zoo cuts off horns to protect rhinos
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TOPSHOT - Giraffes stand together during the annual wildebeest migration in the Masai Mara game reserve on September 12, 2016. / AFP / CARL DE SOUZA        (Photo credit should read CARL DE SOUZA/AFP/Getty Images)
Giraffes face 'silent extinction'
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