Mammal
The giant anteater's tongue can extend about 60 cm and, unlike that of other mammals, attaches directly to the sternum instead of the throat. It flicks in and out up to 150–160 times per minute, snapping up ants and termites with backward-pointing papillae and sticky saliva.
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Sloths were believed to be the only mammals that don't fart—the theory was that methane from digestion was reabsorbed into the bloodstream and exhaled orally. In 2025, a viral video of a sloth farting in a warm bath debunked this myth for good.
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New Zealand's Māori did not come from Australia but descend from people who left Taiwan. By canoe through the Philippines and Papua, they reached New Zealand around 1200–1300 CE. Before their arrival, the islands had no humans—and no mammals at all.
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Mammal milk evolved from skin secretions that originally kept eggs moist. The platypus, the only surviving egg-laying mammal, still coats its soft eggs with secretions to prevent drying, and its hatchlings feed on these secretions for nutrition.
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Humans see three colors; the mantis shrimp sees 16. Most mammals see only two, having lost color receptors during the dinosaur era as nocturnal creatures. Primates alone regained a third through a mutation that helped spot ripe fruit among leaves.
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In mammal births, a round lump of flesh covered in skin and fur sometimes appears, called 'amorphous globosus.' It is a twin that failed to develop and survives by parasitizing the other's blood. In cattle, it occurs about once in every 3,500 pregnancies.
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