Humanity has experienced an unprecedented rate of growth in the past 100 years. The world population has multiplied by 4. We have shaped our environment to perfectly suit ourselves. This has come at a cost for other animals.
The Tasmanian tiger was Australia's only known carnivorous marsupial. Named after its prominent stripes, it was reported to be a relatively shy animal.
The California grizzly bear was a particularly large variety of Grizzly bear. Native to California, it has become a widely recognized symbol of the state.
The Bali Tiger was the smallest known tiger subspecies, native to the Indonesian Island of Bali. It was known for its unique fur coloring.
The Zanzibar leopard was a small variety of leopard native to the Zanzibar islands in Tanzania. Local farmers believed it to be a creature of evil.
The Baiji was a species of river dolphin in China. It lived exclusively in the Yahtzee river, and is thought to be the first dolphin species to have been completely eradicated by humans.
The Pyrenean ibex was a type of Wild Goat from the Pyrenean mountains in southwestern Europe. It was known for its distinctive curved horns.
The Golden toad was a bright orange toad. It lived in a high altitude tropical rainforest in Costa Rica.
The Caribbean monk seal was a subspecies of monk seal, described as being curious and unafraid of humans. These qualities did not serve them well when settlers arrived.
The Caspian tigers was one of the largest cats ever to have lived, weighing up to 240 kg (530 lb). It inhabited the scarce forests and plains of central Asia.
The Western black rhinoceros was an extinct subspecies of black rhinoceros. It had distinctively longer legs and a square horn base in contrast to its cousins.
The Bramble Cay melomys was an extinct Australian rodent. It lived only on one small coral island, Bramble Cay. This made it the most isolated mammal in Australia.
The Indian Cheetah, or Asiatic cheetah, became extinct in India in 1948. It lives on in Iran, but is critically endangered. It is estimated that less than 100 Indian cheetahs remain in the wild.
The Pink-headed duck was a slim, brightly coloured diving duck. While it is technically classified as Critically Endangered, no living examples have been found since the 1950s.