''Lepidobatrachus laevis'', widely known as Budgett's frog, is a species of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

in the family

Ceratophryidae The Ceratophryidae, also known as common horned frogs, are a family of frogs found in South America. It is a relatively small family with three extant genera and 12 species. Despite the common name, not all species in the family have the horn-lik ...

, discovered by

John Samuel Budgett John Samuel Budgett (16 June 1872 – 19 January 1904) was a British zoologist and embryologist. He spent most of his short career on the genus ''Polypterus'' (bichir). This is found in the lakes, river margins, swamps, and floodplains of trop ...

. It is often kept as a

pet A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive appearances, intelligence, ...

. It has acquired a number of popular nicknames, including hippo frog,

Freddy Krueger Freddy Krueger () is a fictional character and the primary antagonist in the ''A Nightmare on Elm Street'' film series. He was created by Wes Craven and made his debut in Craven's ''A Nightmare on Elm Street'' (1984) as the malevolent spirit ...

frog, and escuerzo de agua.

Description

This frog has become popular in

pet store A pet shop or pet store is a retail business which sells animals and pet care resources to the public. A variety of animal supplies and pet accessories are also sold in pet shops. The products sold include: food, treats, toys, collars, leashes, c ...

s due to its comical flat appearance and intelligent behavior. Females reach a size of while males sometimes only grow half as large. They have a large head that makes up to 1/3 of the body, with a notably large mouth. Their mouth contains a top row of

teeth A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tear ...

and two "fangs" on the lower jaw. They have extremely short and stubby limbs and the forelimbs are unwebbed. ''L. laevis'' is dark olive green with darker blotches outlined in orange. The males have a dark blue

throat In vertebrate anatomy, the throat is the front part of the neck, internally positioned in front of the vertebrae. It contains the pharynx and larynx. An important section of it is the epiglottis, separating the esophagus from the trachea (windpipe ...

Diet and behavior

Lepidobatrachus laevis at Kyoto Aquarium

The wide-mouth frog is well adapted to its environment, notably the harsh

winter Winter is the coldest season of the year in polar and temperate climates. It occurs after autumn and before spring. The tilt of Earth's axis causes seasons; winter occurs when a hemisphere is oriented away from the Sun. Different cultures ...

. During this time it will remain inactive underground in a cocoon of shed dead

skin Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other cuticle, animal coverings, such as the arthropod exoskeleton, have diffe ...

which protects it from losing water until they emerge. This species is generally very aggressive and will puff up when threatened to appear larger. If this behavior does not deter the intruder they will make a shrill screech, bite, and corner the target.Vellard, J. (1948). ''Batracios del chaco argentino.'' Acta Zoologica Lilloana, 5, 137-174. They are

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

and hunt at night, submerged up to their

nostril A nostril (or naris , plural ''nares'' ) is either of the two orifices of the nose. They enable the entry and exit of air and other gasses through the nasal cavities. In birds and mammals, they contain branched bones or cartilages called turbi ...

s waiting for prey to pass by. They then lunge and swallow the prey whole. They feed on other frogs,

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

s, and

snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastro ...

s. They have a reputation for being cannibalistic.

Reproduction

''L. laevis'' can produce up to 1400 eggs in a single mating. A pair will reproduce and deposit a mass of fertilized eggs in temporary pools of water. The

embryo An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male spe ...

develops at a rapid rate over two weeks, in order to metamorphize into mobile adolescent form before the breeding pool dries up. The

tadpole A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found i ...

s are

carnivore A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...

s and

cannibalistic Cannibalism is the act of consuming another individual of the same species as food. Cannibalism is a common ecological interaction in the animal kingdom and has been recorded in more than 1,500 species. Human cannibalism is well documented, bo ...

at the time of hatching and have nearly adult jaws. They sexually mature in about a year.Faivovich, J. (1994). ''La distribución del género ''Lepidobatrachus'' (Budgett, 1899) (Leptodactylidae: Ceratophryinae).'' Acta Zoologica Lilloana, 43(1), 137-174.

Distribution and conservation

It is commonly observed in

Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...

and

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

, and less frequently in

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

. Its natural

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

s are the dry and wet Chaco. Breeding may take place in shallow temporary pools and artificial ponds. It is in some areas threatened by

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

but there is a large total population size. The species is listed as Least Concern in view of its relatively wide distribution, presumed large population, and because it is unlikely to be declining rapidly enough to qualify for listing in a more threatened category.

Captivity

These frogs are often kept by keepers with mild experience with frogs or advanced owners. A ten to twenty gallon tank is generally recommended, without aquarium gravel because it causes digestive issues. River stones are a better alternative. Rocks should be sloped to allow the frog to exit the water. They do not require special heating in houses with a comfortable temperature of about . This species of frog needs to be kept alone or with members of the same species and of equal size, as they will consume anything smaller than themselves.

References

External links

* Care information for keeping Lepidobatrachus laevis in the home aquarium at the Aquarium Wiki {{Taxonbar, from=Q2419353 Lepidobatrachus Amphibians of Argentina Amphibians of Bolivia Amphibians of Paraguay Amphibians described in 1899 Internet memes Taxonomy articles created by Polbot