Rodents constitute the largest mammalian order by far. There are over 2052 known species (just try naming 2052 different kinds the next time you are standing in a bus queue!). Over 40% of all mammal species belong to this single diverse, cosmopolitan Order, ranging in size from the Capybara (up to 1.4 m in length), to the tiny Baluchistan Pygmy Jerboa (a mere 3.6 cm excluding tail)...

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