The San Francisco Zoo is a 100-acre (40 ha) zoo located in the southwestern corner of San Francisco, California, between Lake Merced and the Pacific Ocean along the Great Highway. The zoo's main entrance, once located on the north side across Sloat Boulevard and one block south of the Muni Metro L Taraval line, is now to the west on the ocean side of the zoo off of the Great Highway. This zoo is the birthplace of Koko the gorilla, and also the home of "Elly, the black rhinoceros" said to be the oldest Rhino in Northern America. It housed more than 1000 individual animals representing over 250 species as of 2016. If humans disappeared, will the animal species of this zoo escape and survive?
Life After People
1 second after people
Humans disappeared forever.
1 day after people
Power grids fail.
2-4 days after people
All animals including Grey crowned cranes, Grant's zebras (Plains Zebras), Greater kudus, Marabou storks, Ostriches, Reticulated giraffes, Scimitar oryxes, Western lowland gorillas, Yellow-backed Duikers, Hadada ibises, Hamerkops, Northern bald ibises, Black howler monkeys, Chimpanzees, Emperor tamarins, Francois' langurs, Lion-tailed macaques, Mandrills, Patas monkeys, Pied tamarins, Siamangs, Black-and-white ruffed lemurs, Black lemurs, Red-ruffed lemurs, Ring-tailed lemurs, Indian rhinoceroses, Eastern black rhinoceroses, Hippopotamuses, Magellanic penguins, African lions, Fishing cats, Snow leopards, Sumatran tigers, Amur tigers, Bongos, Black-necked swans, Black swans, Capybaras, Giant anteaters, Maguari storks, White-faced whistling ducks, South American tropical tortoises, Blue poison dart frogs, Golfodulcean poison frogs, Green anacondas, Waxy monkey tree frogs, American white pelicans, Polar bears, Grizzly bears, Chacoan peccaries, Sea lions, Meerkats, Great horned owls, Sheep, Goats, Donkeys, Polish (chickens), Pot-bellied pigs, Jacob (sheep), and coatis had escaped from their cages, but will they survive?
4 years after people
Sadly for the chickens, they had died out due to predators and they were dependend on humans for their survival. Chickens are extinct.
100 years after people
All structures of San Francisco Zoo is gone due to sunlight, wind, and rain.
1,000 years after people
All of the descendants of the remaining animals have survived. They have spread to the rest of North America to find more food sources.