12 mammals with largest worldwide population

Name all the mammals on Earth with a worldwide population of 10 million or more.
Rodents and other small mammals have been excluded due to the practically impossible task of reasonably estimating their populations
Populations correspond to single species of mammals.
All populations are estimates. Various sources used.
Quiz by airhero
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Last updated: June 21, 2016
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First submittedJune 16, 2016
Times taken221
Average score58.3%
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Answer
Population
Human
7,300,000,000
Cattle
1,500,000,000
Sheep
1,100,000,000
Pig
1,000,000,000
Goat
860,000,000
Domestic Cat
625,000,000
Answer
Population
Domestic Dog
425,000,000
Water Buffalo
175,000,000
Horse
60,000,000
Donkey
40,000,000
Crabeater Seal
15,000,000
Mule
10,000,000
+1
Level 68
Jun 16, 2016
Rats? Mice?
+1
Level 38
Jun 20, 2016
Good catch! Due to lack of reliable estimates I've submitted notes to the quiz reflecting those mammals are not included.
+1
Level 22
Jun 16, 2016
Oh, gosh, forgot that humans are mammals.