Golden toad, causes of extinction: habitat limitations, global warming, chytridiosis (an infectious disease) and air pollution. The species has not been found since 1989.

Pinta Giant Tortoise, Cause of Extinction: Overhunting by whalers and sailors in the 19th century, destruction of land habitats. The last giant tortoise, Lonesome George, died on June 24, 2012.
Western black rhinoceros, cause of extinction: wildlife poaching. No more eyewitnesses have been reported since 2006.
Southern stomach frogs, causes of extinction: loss and degradation of the living environment, pollution and infectious diseases. There have been no wild records since 1981.
Caribbean monk seal, cause of extinction: hunting. Despite extensive searches, the seal has not been seen since 1952.
Mariana mallard, cause of extinction: hunting and habitat loss. It was declared extinct after the death of the last captive mallard in 1981.
Caspian tigers, causes of extinction: habitat loss and hunting by other tigers. The last record of wild Caspian tigers dates back to the early 1970s.
Javanese tigers, causes of extinction: hunting, forest habitat and the disappearance of prey. The Javanese tiger became extinct in the mid-1970s.
Ostriches of Arabia, cause of extinction: poaching. The last time this ostrich was seen was in Jordan in 1966.
Aldabra Warbler: Cause of Extinction: Habitat degradation caused by animals such as turtles, goats, rats, etc. The last record was in 1983, and a search in 1986 confirmed its extinction.
Japanese sea lion, cause of extinction: humans hunt for their fur, offal and grease. Since the late 1950s, there has been no literature report on the species.
Guam Bully, cause of extinction: Predatory brown tree snake introduced to Guam. The species became extinct in 1983.
Gull birds of the Kama River, causes of extinction: mosquito-borne diseases, predatory and habitat degradation. The last definitive record of the species dates back to 1985.
Oh oh birds of Kauai, causes of extinction: habitat destruction, mosquito-borne diseases and invasive species such as black rats and pigs. The species once survived on the U.S. island of Kauai in Hawaii, and the last time the species was recorded was in 1987.
Despers, Causes of Extinction: Loss of natural habitat, poaching, predation and introduction of exotic plants and fish depleted of food. The last time the species was discovered was in 1982.
Japanese river otter, causes of extinction: fur-induced hunting, river pollution and habitat loss. The species was last discovered by locals in 1979, when the Japanese government officially declared it extinct in 2012.
Naked-tailed rats in Thorny Island, cause of extinction: probably due to frequent storms and reduced vegetation on the island. The last one was only discovered in 2009.
Eastern mountain lion, causes of extinction: habitat loss and illegal poaching. The last time the species was officially recorded was in the late 1930s. However, the species was officially declared extinct in the United States on January 22, 2018.
Dark beach finches, causes of extinction: loss of living environment due to sewage and construction activities, poisoning caused by spraying insecticides. In 1987, the last known beach finch died.
Tercopa medaka, cause of extinction: habitat destruction. The fish became extinct in 1981.
Passenger pigeons, the cause of extinction: their natural habitat has been extensively cleared, over-hunting and newcastle disease. The last wild records date back to 1900.
Tasmanian tiger (aka thylacine), causes of extinction: hunting, extreme weather and drought. The last known thylacine died at hobart zoo in 1936.
Great auk, cause of extinction: hunted for feathers, meat, fat and grease. The last bird was discovered in 1852.
Stelle manatee, cause of extinction: artificially hunted for its flesh and skin. The species became extinct around 1768.