Animal Encyclopedia
Official or semi-official estimates of the population of some animals worldwide
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Ants: 10 quintillion (10,000,000,000,000,000,000)
Krill: 500 trillion
Humans: 7.9 billion
Domestic chickens: 24.5 billion
Cattle: 1.4 billion
Pigs: 1.1 billion
Sheep: 1.1 billion
Goats: 1 billion
Fish: 1.5 trillion (wild)
Birds: 10 billion
Reptiles: 10,000 species
Amphibians: 6,000 species
Mammals: 5,500 species
African elephant: 415,000
American bison: 500,000
American crocodile: 500,000
American flamingo: 3.5 million
Arctic fox: 250,000
Asian elephant: 40,000–50,000
Atlantic salmon: 1.5 million
Australian cattle dog: 3 million
Australian sea lion: 120,000
Bald eagle: 100,000
Bengal tiger: 3,900
Black bear: 800,000
Blue whale: 10,000–25,000
Brown bear: 200,000
California sea lion: 300,000
Cape buffalo: 900,000
Caribou: 5–6 million
Chimpanzee: 150,000–200,000
Clouded leopard: 8,000–10,000
Common dolphin: 60 million
Common ostrich: 250,000–500,000
Cougar: 70,000–100,000
Coyote: 30–40 million
Crocodilus porosus: 200,000–300,000
Dolphin: 300–400 species, populations vary
Donkey: 40–50 million
Eagle: 600 species, populations vary
Elephant seal: 100,000–150,000
Emperor penguin: 500,000
Eurasian lynx: 10,000–12,000
European bison: 2,500–3,000
European fallow deer: 1.5 million
European hedgehog: 70 million
European hare: 10–12 million
European otter: 50,000–100,000
European wildcat: 90,000–100,000
Flamingo: 600 species, populations vary
Giant panda: 1,800–2,000
Golden eagle: 50,000–100,000
Gorilla: 880–1000
Great white shark: 3,500–5,000
Grizzly bear: 55,000–75,000
Hippopotamus: 130,000–150,000
Honey bee: 20,000–30,000 species, populations vary
Humpback whale: 100,000–120,000
Jaguar: 15,000–17,000
Kangaroo: 50 million
King cobra: 50,000–100,000
Lion: 20,000–30,000
Lionfish: 1 million
Macaw: 15 species, populations vary
Meerkat: 100,000–120,000
Monkey: 260 species, populations vary
Mountain lion: 40,000–50,000
Mouse: 2,000 species, populations vary
Newt: 800 species, populations vary
Octopus: 300 species, populations vary
Orangutan: 100,000–150,000
Otter: 13 species, populations vary
Owl: 200 species, populations vary
Panda: 1,800–2,000
Penguin: 18 species, populations vary
Platypus: 30,000–50,000
Polar bear: 25,000–30,000
Prairie dog: 50 million
Python: 30 species, populations vary


These estimates are based on a variety of sources, including scientific surveys, government data, and industry reports. It is important to note that these estimates can vary depending on the source and the methods used to collect the data. For example, the estimate for the number of ants in the world is based on a study that used a variety of methods, including counting ants in different habitats and estimating the number of ants in each habitat. The estimate for the number of krill in the world is based on a study that used satellite data to estimate the amount of krill in the ocean.

It is also important to note that these estimates are only estimates. The actual populations of these animals may be higher or lower than the estimates. The populations of these animals are also constantly changing due to a variety of factors, such as habitat loss, climate change, and hunting.