Lists of mammals by population
|The population of mammals|
Given that 1.5 billion hectares of the world's best land is now farmed (37% of land), using an estimate 20 mammals per hectare, we can conservatively say that we have displaced over 30 billion mammals.
This is a collection of lists of mammal species by estimated global population, divided by orders. (Lists only exist for some orders; e.g. the most diverse order - rodents - is missing.) Much of the data in these lists were created by the IUCN's Global Mammal Assessment Team, which consists of 1700 mammalogists from over 130 countries. They recognize 5488 species in the class.
These lists are not comprehensive, as not all mammals have had their numbers estimated. For example, a live specimen of the spade-toothed whale was first observed in December 2010, and the event only recognized as such in November 2012; no estimate yet exists for the global population. The accuracy of the quote numbers may only be an order of magnitude.
Lists by taxonomic order
- List of even-toed ungulates by population - cattle, sheep, pigs, goats, water buffalo, camels, bison, yak, llamas, deer, antelope, giraffe, moose, hippos
- List of odd-toed ungulates by population - horses, donkeys, mules, zebras, asses, rhinos, tapirs
- List of carnivorans by population - domestic and wild cats & dogs, seals & other sea mammals, bears, weasels, foxes, mongoose
- List of bats by population
- List of cetacean species with population estimates - dolphins, porpoises, whales
- List of primates by population - humans, other apes (including chimpanzees), monkeys
- IUCN (n.d.). "Initiatives:Mammals". IUCN Red List of Threatened Species. Version 2012.2. IUCN. Retrieved 2012-11-21.
- IUCN (n.d.). "Initiatives:Mammals:Acknowledgements". IUCN Red List of Threatened Species. Version 2012.2. IUCN. Retrieved 2012-11-21.
- Thompson, Kirsten; C. Scott Baker; Anton van Helden; Selina Patel; Craig Miller; Rochelle Constantine (6 November 2012). "The world's rarest whale". Current Biology. 22 (21): R905–R906. doi:10.1016/j.cub.2012.08.055. Retrieved 7 November 2012.