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A forked tongue is a
tongue The tongue is a muscular organ (anatomy), organ in the mouth of a typical tetrapod. It manipulates food for mastication and swallowing as part of the digestive system, digestive process, and is the primary organ of taste. The tongue's upper surfa ...
split into two distinct tines at the tip; this is a feature common to many species of
reptile Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates (lizards and snakes) and rhynchocephalians ( ...
s. Reptiles smell using the tip of their tongue, and a forked tongue allows them to sense from which direction a smell is coming. Sensing from both sides of the head and following trails based on chemical cues is called tropotaxis. It is unclear whether forked-tongued reptiles can actually follow trails or if this is just a hypothesis. Forked tongues have evolved in these
squamate Squamata (, Latin ''squamatus'', 'scaly, having scales') is the largest order of reptiles, comprising lizards, snakes, and amphisbaenians (worm lizards), which are collectively known as squamates or scaled reptiles. With over 10,900 species, ...
reptiles (lizards and snakes) for various purposes. The advantage to having a forked tongue is that more surface area is available for the chemicals to contact and the potential for tropotaxis. The tongue is flicked out of the mouth regularly to sample the chemical environment. This form of chemical sampling allows these animals to sense non-volatile chemicals, which cannot be detected by simply using the olfactory system. This increased ability to sense chemicals has allowed for heightened abilities to identify prey, recognize kin, choose mates, locate shelters, follow trails, and more. Forked tongues have evolved multiple times in squamates. It is unclear, based on the morphological and genetic evidence, where the exact points of change are from a notched tongue to a forked tongue, but it is believed that the change has happened two to four times. A common behavioral characteristic that has evolved in those with forked tongues is that they tend to be wide foragers.
Hummingbird Hummingbirds are birds native to the Americas and comprise the biological family Trochilidae. With about 361 species and 113 genera, they occur from Alaska to Tierra del Fuego, but the vast majority of the species are found in the tropics aro ...
s also have tongues that split at the tip.
Galago Galagos , also known as bush babies, or ''nagapies'' (meaning "night monkeys" in Afrikaans), are small nocturnal primates native to continental, sub-Sahara Africa, and make up the family Galagidae (also sometimes called Galagonidae). They ar ...
s (bushbabies) have a secondary tongue, or
sublingua The sublingua ("under-tongue") is a muscular secondary tongue found below the primary tongue in tarsiers and living Strepsirrhini, strepsirrhine primates, which includes lemurs and Lorisoidea, lorisoids (collectively called "Lemuriformes, lemurif ...
, used for grooming, hidden under their first.


Usage as First Nations cultural term

The phrase "speaks with a forked tongue" means to deliberately say one thing and mean another or, to be hypocritical, or act in a duplicitous manner. In the longstanding tradition of many Native American tribes, "speaking with a forked tongue" has meant lying, and a person was no longer considered worthy of trust, once he had been shown to "speak with a forked tongue." This phrase was also adopted by Americans around the time of the Revolution, and may be found in abundant references from the early 19th century—often reporting on American officers who sought to convince the tribal leaders with whom they negotiated that they "spoke with a straight and not with a forked tongue" (as for example, President
Andrew Jackson Andrew Jackson (March 15, 1767 – June 8, 1845) was an American lawyer, planter, general, and statesman who served as the seventh president of the United States from 1829 to 1837. Before being elected to the presidency, he gained fame as ...
told the Creek Nation in 1829). According to one 1859 account, the native proverb that the "white man spoke with a forked tongue" originated as a result of the French tactic of the 1690s, in their war with the
Iroquois The Iroquois ( or ), officially the Haudenosaunee ( meaning "people of the longhouse"), are an Iroquoian-speaking confederacy of First Nations peoples in northeast North America/ Turtle Island. They were known during the colonial years to ...
, of inviting their enemies to attend a peace conference, only to be slaughtered or captured.


Literary usage

There are appearances of the phrase "forked tongue" in
English literature English literature is literature written in the English language from United Kingdom, its crown dependencies, the Republic of Ireland, the United States, and the countries of the former British Empire. ''The Encyclopaedia Britannica'' defines E ...
, either in reference to actual snakes' tongues, or as a metaphor for untruthfulness, such as a sermon by
Lancelot Andrewes Lancelot Andrewes (155525 September 1626) was an English bishop and scholar, who held high positions in the Church of England during the reigns of Elizabeth I and James I. During the latter's reign, Andrewes served successively as Bishop of Chic ...
, who died in 1626: "And he hath the art of cleaving. He shewed it in the beginning, when he made the Serpent, linguam bisulcam, a forked tongue, to speake that, which was contrarie to his knowledge and meaning, They should not die; and as he did the Serpent's, so he can doe others." The phrase also appears in Milton's ''
Paradise Lost ''Paradise Lost'' is an epic poem in blank verse by the 17th-century English poet John Milton (1608–1674). The first version, published in 1667, consists of ten books with over ten thousand lines of verse (poetry), verse. A second edition fo ...
'':
According to his Doom: He would have spoke, But Hiss for Hiss return'd with forked Tongue To forked Tongue, for now were all transform'd...


See also

*
Ankyloglossia Ankyloglossia, also known as tongue-tie, is a congenital oral anomaly that may decrease the mobility of the tongue tip and is caused by an unusually short, thick lingual frenulum, a membrane connecting the underside of the tongue to the floor of ...
*
Dicroglossidae The frog family Dicroglossidae occurs in tropical and subtropical regions of Asia and Africa, with most genera and species being found in Asia. The common name of the family is fork-tongued frogs. The Dicroglossidae were previously considered to ...
, family of frogs commonly called the fork-tongued frogs *
Doublespeak Doublespeak is language that deliberately obscures, disguises, distorts, or reverses the meaning of words. Doublespeak may take the form of euphemisms (e.g., "downsizing" for layoffs and "servicing the target" for bombing), in which case it ...
*
Silver tongue (disambiguation) A "silver tongue" implies one with a tendency to be eloquent and persuasive in speaking. Silver tongue may refer to: Art and literature *''Silvertongue'', the third book in Charlie Fletcher's ''Stoneheart'' trilogy *Silvertongue, the lawyer in ...
*
Tongue splitting Tongue bifurcation, splitting or forking, is a type of body modification in which the tongue is cut centrally from its tip to as far back as the underside base, forking the end. Bifid tongue in humans may also be an unintended complication of ...
(a surgical procedure)


References

{{DEFAULTSORT:Forked Tongue Deception Sensory organs in animals Tongue