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((Short description|Species of amphibian))
((multiple issues|
((More citations needed|date=May 2017))
((More footnotes|date=May 2017))
))
((speciesbox 
| name = Argentine horned frog
| status = NT
| status_system = IUCN3.1
| image = Mr Wiggles 7-20-07 (870844637).jpg
| taxon = Ceratophrys ornata
| authority = ([[Thomas Bell (zoologist)|Bell]], 1843)
| synonyms = *''Uperodon ornatum'' <br>((small|Bell, 1843))
*''Ceratophrys ornata'' <br>((small|— [[Albert Günther|Günther]], 1858))
))
The '''Argentine horned frog''' (''Ceratophrys ornata''), also known as the '''Argentine wide-mouthed frog''', '''ornate horned frog''', '''ornate horned toad''', '''ornate pacman frog''', or just the '''pacman frog''' is a [[species]] of frog in the [[Family (biology)|family]] [[Ceratophryidae]]. The species is [[Endemism|endemic]] to [[South America]]. It is the most common species of [[South American horned frog|horned frog]], in the grasslands of [[Argentina]], [[Uruguay]] and [[Brazil]]. A voracious eater, it will attempt to swallow anything that moves close to its wide mouth, such as [[insect]]s, rodents, [[lizard]]s, and other [[frog]]s, even if this predator would [[Asphyxia|suffocate]] in the process. It is also kept as an [[exotic pet]]. The nickname "pacman frog" is a reference to the popular 1980's arcade game ''[[Pac-Man]]'', where Pac-Man himself eats quite a lot, and has a mouth that takes up most of its body, much like the Argentine horned frog.

==Description==
The females of ''C. ornata'' can grow to be 16.5 centimeters (6.5 inches) snout to vent (SV) and the males 11.5 centimeters (4.5&nbsp;in) SV. The average lifespan is 6 to 7 years, however they can live up to 10 years or more in captivity.<ref>[http://www.thelilypad.org/node/22 Argentinian Horned Frog (Pacman Frog) (''Ceratophrys ornata'')] ((webarchive|url=https://web.archive.org/web/20070519110032/http://www.thelilypad.org/node/22 |date=2007-05-19 ))</ref><ref>[http://www.klsnet.com/frogs.html Common Frog Species]</ref>
A horned frog's most prominent feature is its mouth, which accounts for roughly half of the animal's overall size.  Coloration is typically bright green with red markings, though dark green, parti-color black, and red with dark markings do exist. 
Sexing this species is very difficult before sexual maturity is reached. [[Sexual dimorphism|Dimorphism]] traits between the two sexes are size difference and males possessing dark pigmented throats and nuptial pads on the forelimbs.

==Feeding==
All horned frogs, species of the genus ''Ceratophrys'', hunt by remaining motionless, and waiting for prey. They will try to eat anything that can fit in their mouths and some things that can't. Argentine horned frogs have fat bodies that they can draw on as an emergency food source during the dry season or when food is scarce. Their heavy bodies allow the animal to remain anchored while taking on larger prey items. In the wild, their typical diet would include rodents such as mice, small reptiles, large spiders, and insects such as locusts.

Horned frogs are well known for their fearless reputation. They will attempt to consume animals, sometimes equal to or greater than their size. If threatened by a larger animal such as a human, these frogs can deliver a painful bite as they have several odontoid projections (not teeth per se) along the bottom and upper jaw. A bite from an Argentine horned frog can be painful and may require medical attention. Sometimes they will even jump toward their attacker, no matter their size and power. In captivity, these frogs' natural diet is fairly easy to recreate. When kept as a pet, the horned frogs are usually fed a staple diet of calcium-dusted crickets when young and night crawlers as well as the occasional mouse as an adult; they also enjoy – depending on size – live fish. However, studies have proven that primarily feeding horned frog mice causes fat build-up, which often results in blindness and death.<ref>((Cite journal|url=https://veterinarypartner.vin.com/default.aspx?pid=19239&catId=102919&id=7996856|title = Veterinary Partner|website = Vin.com|date = 8 August 2017|last = Lock |first1 = Brad))</ref>

==Reproduction==
Argentine horned frogs reproduce sexually. The Argentine horned frog's females deposit about 2,000 eggs in water and within two weeks they become tadpoles. A male Argentinian frog will use its nuptial pads to grasp the female while the eggs are fertilized.

==Gallery==

<gallery>
File:Chet Pac Man toad.jpg|A young Argentine pacman frog
File:Pacman frog.jpg|Albino Argentine pacman frog, with brilliant yellow color
File:Argentine.horned.frog.arp.jpg|Argentine horned frog ''Ceratophrys ornata''
File:CeratophrysOrnataLyd.jpg|1896 lithograph by R. A. Lydekker for The Royal Natural History
File:Ceratophrys ornata.jpg|1885 lithograph by R. Mintern
File:Horned frog.jpg|Eye external features of a frog
File:Adult pacman frog.jpg|A close-up of an adult male High Red Ornate Pacman Frog.
File:Argentine Horned Frog (Ceratophrys ornata)1.JPG|An Argentine horned frog
File:Ceratophrys ornata in Prague Zoo.JPG|At [[Prague Zoo]]
</gallery>

==References==
((Reflist))

==Further reading==
*[[Thomas Bell (zoologist)|Bell T]] (1843). ''The Zoology of the Voyage of H.M.S. Beagle, under the Command of Captain FitzRoy, R.N., during the Years 1832 to 1836. Part V. Reptiles.'' London: Smith, Elder and Co. vi + 51 pp. + Plates I-XX. (''Uperodon ornatum'', new species, pp.&nbsp;50–51 + Plate XX, figure 6). (in English and Latin).
*[[George Albert Boulenger|Boulenger GA]] (1882). ''Catalogue of the Batrachia Salientia s. Ecaudata in the Collection of the British Museum. Second Edition.'' London: Trustees of the British Museum. (Taylor and Francis, printers). xvi + 503 pp. + Plates I-XXX. (''Ceratophrys ornata'', pp.&nbsp;225–226).
*[[Albert Günther|Günther A]] (1858). ''Catalogue of the Batrachia Salientia in the Collection of the British Museum.'' London: Trustees of the British Museum. (Taylor and Francis, printers). xvi + 160 pp. + Plates I-XII. (''Ceratophrys ornata'', pp.&nbsp;25–26).
*Kobasa, Paul A., editor-in-chief (2006). "Argentine horned frog." ''The World Book Encyclopedia, Volume 1''. Chicago: World Book, Inc. (p.&nbsp;275).
*De Vosjoli, Philippe (1990). ''The General Care and Maintenance of Horned Frogs''. Mission Viejo, California: Advanced Vivarium Systems. 32 pp. ((ISBN|978-1882770007)).
*Mattison, Chris (1987). ''Frogs and Toads of the World''.  New York: Facts on File. 191 pp. ((ISBN|978-0816016020)).

((Taxonbar|from=Q954868))

[[Category:Ceratophrys]]
[[Category:Amphibians of Argentina]]
[[Category:Frogs of Brazil]]
[[Category:Amphibians of Uruguay]]
[[Category:Amphibians described in 1843]]
[[Category:Taxa named by Thomas Bell (zoologist)]]

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