Note: This is a 360° Video — press and hold to explore it!
Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
frog : any of various largely aquatic leaping anuran amphibians (such as ranids) that have slender bodies with smooth moist skin and strong long hind legs with webbed feet — Webster
Frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura. The oldest fossil “proto-frog” appeared in the early Triassic of Madagascar, but molecular clock dating suggests their origins may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforests. There are approximately 4,800 recorded species, accounting for over 85% of extant amphibian species. They are also one of the five most diverse vertebrate orders.
The body plan of an adult frog is generally characterized by a stout body, protruding eyes, cleft tongue, limbs folded underneath, and the absence of a tail in adults. Besides living in fresh water and on dry land, the adults of some species are adapted for living underground or in trees. The skin of the frog is glandular, with secretions ranging from distasteful to toxic. Warty species of frog tend to be called toads but the distinction between frogs and toads is based on informal naming conventions concentrating on the warts rather than taxonomy or evolutionary history; some toads are more closely related to frogs than to other toads. Frogs’ skins vary in color from well-camouflaged dappled brown, grey and green to vivid patterns of bright red or yellow and black to advertise toxicity and warn off predators.
Frogs typically lay their eggs in water. The eggs hatch into aquatic larvae called tadpoles that have tails and internal gills. They have highly specialized rasping mouth parts suitable for herbivorous, omnivorous or planktivorous diets. The life cycle is completed when they metamorphose into adults. A few species deposit eggs on land or bypass the tadpole stage. Adult frogs generally have a carnivorous diet consisting of small invertebrates, but omnivorous species exist and a few feed on fruit. Frogs are extremely efficient at converting what they eat into body mass.
They are an important food source for predators and part of the food web dynamics of many of the world’s ecosystems. The skin is semi-permeable, making them susceptible to dehydration, so they either live in moist places or have special adaptations to deal with dry habitats. Frogs produce a wide range of vocalizations, particularly in their breeding season, and exhibit many different kinds of complex behaviours to attract mates, to fend off predators and to generally survive. — Wikipedia
Note: This is a 360° Video — press and hold to explore it!
Frogs and Reptiles News -- ScienceDaily Snakes, lizards, alligators, frogs and toads. From habitat information to frogs in stem cell research, you will find all the reptile and amphibian news here.
Human activity threatens vertebrate evolutionary...
on June 3, 2020 at 11:44 pm
A new study maps for the first time the evolutionary history of the world's terrestrial vertebrates: amphibians, birds, mammals and reptiles. It explores how areas with large concentrations of evolutionarily distinct species are being impacted by our ever-increasing 'human footprint.'
Tiger snakes tell more about local wetlands'...
on June 2, 2020 at 3:00 pm
Tiger snakes living in Perth's urban wetlands are accumulating toxic heavy metals in their livers, suggesting that their habitats -- critical, local ecosystems -- are contaminated and the species may be suffering as a result.
Loggerhead sea turtles host diverse community of...
on June 1, 2020 at 11:41 pm
Researchers found that more than double the number of organisms than previously observed live on the shells of these oceanic reptiles, raising important questions about loggerhead sea turtle ecology and conservation.
Sea snakes have been adapting to see underwater...
on May 28, 2020 at 3:58 pm
A study has for the first time provided evidence of where, when and how frequently species have adapted their ability to see in color.
A new critically endangered frog named after...
on May 25, 2020 at 3:56 pm
A new species of a criticallyendangered miniaturized stump-toed frog of the genus Stumpffia found in Madagascar is named Stumpffia froschaueri after ''the man from the floodplain full of frogs'', Christoph Froschauer.
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
NASA fosters innovative ways to understand...
on June 4, 2020 at 10:54 am
The yellow-billed cuckoo has soft brown wings, a white belly, a long tail with black and white spots, and is running out of places to live. The cuckoo's population in its native breeding range in the eastern United States has declined in recent decades due to urbanization, heat waves and other factors. Climate change will likely further reduce its suitable habitat.
Alien frog invasion wreaks havoc on natural...
on June 4, 2020 at 10:53 am
Indiscriminate feeding by an alien population of the carnivorous spotted-thighed frog—could severely affect the native biodiversity of southern Australia according to a new study by the University of South Australia.
Heavy metals present in snake livers raise...
on June 2, 2020 at 11:42 am
Tiger snakes living in Perth's urban wetlands are accumulating toxic heavy metals in their livers, suggesting that their habitats—critical, local ecosystems—are contaminated and the species may be suffering as a result.
Human activity threatens billions of years of...
on May 27, 2020 at 12:33 pm
A ZSL study published in Nature Communications today maps the evolutionary history of the world's terrestrial vertebrates—amphibians, birds, mammals and reptiles—for the first time, exploring how areas with large concentrations of evolutionarily distinct and threatened species are being impacted by our ever-increasing 'human footprint'.
Scientists see through glass frogs' translucent...
on May 25, 2020 at 7:00 pm
Glass frogs are well known for their see-through skin but, until now, the reason for this curious feature has received no experimental attention.