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Cattle have the largest biomass of any animal species on Earth, at roughly 400 million tonnes, followed closely by Antarctic krill at 379 million tonnes and humans at 373 million tonnes. [96] In 2023, the countries with the most cattle were India with 307.5 million (32.6% of the total), Brazil with 194.4 million, and China with 101.5 million ...
List of marsupials by population – Wombats, koalas and kangaroos. List of lagomorphs by population – rabbits, hares, and pikas. List of other Afrotheres by population – seacows, sengis, golden moles, otter shrews, tenrecs, hyraxes and the aardvark. List of rodents by population – cavies, squirrels, springhares, mice, beaver etc.
List of cattle breeds. Over 1000 breeds of cattle are recognized worldwide, some of which adapted to the local climate, others which were bred by humans for specialized uses. [1] Cattle breeds fall into two main types, which are regarded as either two closely related species, or two subspecies of one species. Bos indicus (or Bos taurus indicus ...
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
Global biodiversity is the measure of biodiversity on planet Earth and is defined as the total variability of life forms. More than 99 percent of all species [1] that ever lived on Earth are estimated to be extinct. [2][3] Estimates on the number of Earth's current species range from 2 million to 1 trillion, but most estimates are around 11 ...
It is responsible for somewhere between 20 and 33% of the fresh water usage in the world, [57] and livestock, and the production of feed for them, occupy about a third of Earth's ice-free land. [58] Livestock production is a contributing factor in species extinction , desertification , [ 59 ] and habitat destruction . [ 60 ]
Livestock make up 62% of the world's mammal biomass; humans account for 34%; and wild mammals are just 4% [276] Mammals serve a major role in science as experimental animals, both in fundamental biological research, such as in genetics, [277] and in the development of new medicines, which must be tested exhaustively to demonstrate their safety ...
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms. This number, along with the visual appearance of the chromosome, is known as the karyotype, [1][2][3] and can be found by looking at the chromosomes through a microscope.