Tongue
Hummingbirds do not draw nectar through capillary action — their tongue is a fluid trap. The forked tip opens when it touches nectar and snaps shut as the tongue retracts, scooping up liquid in the process. The finding overturned a century-old textbook explanation.
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The northern blue-tongued skink's tongue does more than look blue — it strongly reflects ultraviolet light, with the rear reflecting roughly twice as much as the front. Normally camouflaged, it gapes its mouth at predators to flash the UV-bright rear in a deimatic display.
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A woodpecker's tongue is so long it cannot fit in the mouth. It rides on a bone-and-cartilage rig built around the hyoid bone, looping around the back of the skull up to the forehead or even the nostrils. Up to a third of the bird's length, it also stiffens the skull during each peck.
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A giraffe's tongue reaches 45–53 cm with a tip colored deep blue, black, or purple. The dark hue comes from melanin, and the leading explanation is ultraviolet protection: giraffes spend 16–20 hours browsing with the tongue out, so its most exposed part needs sunscreen.
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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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The smallest chameleon, Rhampholeon spinosus, fires its tongue at 264g — 264 times gravity. F-16 pilots feel about 7g; the Space Shuttle reaches roughly 3g. The trick is not muscle but elastic energy stored in collagen sheaths around the hyoid bone and released like a slingshot.
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Sharks have no real tongue — just a small slab of cartilage, the basihyal, on the mouth floor. Useless in most species, it is the cookiecutter shark's key weapon: the shark latches on, retracts its mobile basihyal to create a vacuum, then twists out a round plug of flesh.
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