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Is that 20% of the number of species of mammals, or 20% of the number of individual mammals?
1400 species, about 20% of all mammals. So the former.
Also, rodents make up about 40% of all species of mammals.
Is that 20% of the number of species of mammals, or 20% of the number of individual mammals?
1400 species, about 20% of all mammals. So the former.
Also, rodents make up about 40% of all species of mammals.
