Surprise discovery of two new—and very loud—frog species

Scientists from the University of Newcastle, Australian Museum, South Australian Museum, and Queensland National Parks and Wildlife have found and described two new, very loud frog species from eastern Australia: the Slender ...

New frog species 'hopping' into protection

A new frog species has been discovered in Wollumbin National Park in northern New South Wales, and is one of only two known species that store their tadpoles on their bodies.

Scientists produce tadpoles better adapted to climate change

In a world-first laboratory trial reported in Communications Biology, a research team at The University of Western Australia have mixed populations to produce tadpoles that would be more tolerant of climate change.

Fewer frogs died by vehicles in the outset of the pandemic

Fewer frogs died from vehicle collisions in spring 2020, when the COVID-19 pandemic began, than during the season in other recent years, according to a new study led by a University of Maine graduate student and community ...

Linker histones tune the length and shape of chromosomes

Human life hinges on the ability of our cells to cram six feet of DNA into a 10-micron nucleus—equivalent to fitting a mile of string inside one green pea. But stuffing genes into cramped quarters is only half the battle. ...

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Frog

Archaeobatrachia Mesobatrachia Neobatrachia - List of Anuran families

Frogs are amphibians in the order Anura (meaning "tail-less", from Greek an-, without + oura, tail), formerly referred to as Salientia (Latin saltare, to jump). The name frog derives from Old English frogga, (compare Old Norse frauki, German Frosch, older Dutch spelling kikvorsch), cognate with Sanskrit plava (frog), probably deriving from Proto-Indo-European praw = "to jump".

Most frogs are characterized by long hind legs, a short body, webbed digits (fingers or toes), protruding eyes and the absence of a tail. Most frogs have a semi-aquatic lifestyle, but move easily on land by jumping or climbing. They typically lay their eggs in puddles, ponds or lakes, and their larvae, called tadpoles, have gills and develop in water. Adult frogs follow a carnivorous diet, mostly of arthropods, annelids and gastropods. Frogs are most noticeable by their call, which can be widely heard during the night or day, mainly in their mating season.

The distribution of frogs ranges from tropic to subarctic regions, but most species are found in tropical rainforests. Consisting of more than 5,000 species described, they are among the most diverse groups of vertebrates. However, populations of certain frog species are declining significantly.

A distinction is often made between frogs and toads on the basis of their appearance, caused by the convergent adaptation among so-called toads to dry environments; however, this distinction has no taxonomic basis. The only family exclusively given the common name "toad" is Bufonidae, but many species from other families are also called "toads," and the species within the toad genus Atelopus are referred to as "harlequin frogs".

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