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Look at it well because without the help of a photographic zoom this frog (Theloderma corticale) is practically impossible to find.

This is thanks to its bumpy skin full of green and brownish protrusions that recalls the texture and colors of moss. The ideal disguise to perfectly disguise yourself in the humid tropical forests of Vietnam, where it lives.

Seeing it up close is therefore a rather rare event, and not only because of its mimetic abilities: the progressive deforestation of its natural habitat is seriously endangering its survival, especially as this tree frog - which as an adult is about 7 centimeters long - it often lurks and reproduces inside the trunks of trees, in cavities where some rain water is deposited.

Moreover, the particular structure of its skin often makes it the subject of an illegal trade that forcibly removes it from its ecosystem.

The whole wrinkle look of a Peruvian frog
A frog that certainly does not go unnoticed: it is blue!
[EI]

Difficult to grasp (here the prodigious shot of a high-speed photo has taken place) just the moment in which a temporary frog (Rana temporaria) dives into the water, the environment he prefers to reproduce.

This Anuro, who loves to live in the woods in mountain meadows, but always near streams, lakes or temporary pools that are formed by the thaw, deposits his own eggs in water, in round masses that can contain up to 400 eggs . If the climatic conditions are not favorable, the larvae are able to wait until the end of winter before evolving into adult frogs (which otherwise happens in 2 and a half months).

If Italian athletes are still celebrating the recent European gold in Andrew Howe's long jump, this young Austrian girl is also celebrating … for the little frog jump just out of the water and landed directly on her nose.

If among the amphibians is the frog the champion of the jumps, among the mammals the primacy belongs to the snow leopard, able to swoop on the preys even 15 meters distant.

The kangaroo, quintessential jumper, stops at 9 meters and is surpassed also by the gibbon, a monkey that jumps 12 meters away. Then comes the man … or rather the champions.

Photo: © Erich Mangl

Despite its small size (about 4 centimeters in length), this frog (Dendrobates azureus) certainly does not go unnoticed: the electric blue of its skin has made it so popular, that amphibian enthusiasts are willing to pay even $ 75 for have one. Its particular color makes it visible even to its possible predators. Bad luck? No, it is a natural form of defense: the unusual pigment reminds the other animals that it is a poisonous frog and it seems that this way it manages to dissect them from eating it. But for the Dendrobates, poisonousness is a "family" vice and they have a special way of procuring poison .

Smooth and motionless as it seems to have just emerged from the wax museum. Instead, this South American frog (Phyllomedusa sauvagaii) exhibited at the Museum of Natural History in New York is alive and well. Its strange appearance is due to a special fatty secretion that covers its skin, keeping it always well hydrated even when it is very hot.

A curiosity: this frog does not jump like most of its like, but walks crouched with a step that reminds some primates. For this reason it is often nicknamed "monkey frog".

See more fantastic frog photos
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Shy and grumpy this frog does not like to show off. Not only does it live far from any form of human civilization, in the wildest areas of the forest, but it spends most of its time on top of trees. In fact, the Agalychnis craspedopus frog descends to the ground only to lay its eggs in safe places, like a trunk full of rainwater. Besides being timid, the Agalychnis, photographed here in Ecuador, is also very scary and its colored coat that seems to be covered with lichens is useful for camouflaging with the plants on which it lives.

There are few lucky tourists who have managed to admire some specimens.

This funny big face belongs to the most "wrinkled" amphibian there is: the Peruvian frog of Lake Titicaca (Telmatobius culeus). It is no coincidence that nature has endowed it with an infinite series of skin folds. The sympathetic frog in fact absorbs most of the oxygen from the skin and all these ripples allow it to breathe better when it is on land.
The largest specimens are also the most "wrinkled". Like those discovered by some explorers in the 1970s, up to 50 centimeters long and even a kilo heavy. And perhaps because of their size these frogs were venerated by the natives, who exchanged their croaks for an invocation to the rain.
Find out how much the prehistoric frog weighed frightening the dinosaurs and come to know another tiny one . Also look at a frog with claws .
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Looking at this column of transparent eggs, mother rain frog (Eleutherodactylus sp.) Can get an overall idea of ​​the growth of her young. The eggs of this amphibian are in fact small natural incubators, within which the embryos develop directly in frogs. In short, the little ones of Eleutherodactylus "burn the stages" and skip the tadpoles phase, so they don't need water to survive. This is an evolutionary stratagem that these amphibians have adopted to be able to reproduce even in the most distant places from the marshes.

This small poisonous frog (Dendrobates umilio), which can take on the most vivid colors and lives in the forests of Costa Rica, has always amazed researchers for the advanced degree of their parental care. Father and mother together take care of the eggs, making sure that they always remain moist.

It is then the mother to take care of the tadpoles, loading them on their backs and taking them to the small pools of water formed by the bromeliads, cup-shaped plants. The children are placed in different glasses to prevent them from eating each other and each of them is provided with an unfertilized egg that is used as food since it is a precious source of proteins and sugars.

This African clawed frog (Xenopus laevis) is forced to have very aggressive microbes in the stagnant swamp waters where it lives. And she defends herself not with her claws, but with blows of … mucus. When it feels threatened, in fact, it secretes a substance called magainin, a chemical compound similar to that produced by some plants, which has a miraculous anti-parasite and antiviral effect. But, according to experts, magainin does not only work for frogs, it could also be useful for our skin and therefore be used to create new drugs.

Evolution has given some species a decidedly strange appearance. This Budgett frog (Lepidobatrachus laevis) has a squat shape and does not have long and dynamic legs to make long throws: it prefers rather to sink into the mud and between sediments of swampy areas full of vegetation and with a water depth between 5 and 15 centimeters. He lives mainly in Brazil and Paraguay. In this frog the sexual dimorphism is evident, that is to say that the female is bigger than the male, a sign, this, that among the males there are no intertwining struggles for mating so fierce as to justify a particularly powerful tonnage.

The smooth xenopus (Xenopus laevis) is a frog native to the muddy ponds of South Africa, introduced in California, Chile, Great Britain and many other areas of the world, although his was not a spontaneous migration. This amphibian was (and still is) in fact widely used in research laboratories around the world, especially for experimentation in the embryological field: xenopo embryos are transparent and it is easy to follow their development from the outside.

Also in the 1940s, these frogs became the first (living) pregnancy test for women. In female specimens a woman's urine was injected and if the latter was pregnant, after the injection the frog began to produce eggs.

On the legitimacy of animal testing, read our dedicated special

A leopard frog (Rana pipiens), spend it in the water of a pond. Typical of some regions of North America, this frog is a true predator, in addition to insects, it also eats small vertebrates, such as other frogs, mice and fish. But when he has to look for a companion (or a partner) to mate, he does not like the company of his fellows or other animals very much. For this it is not difficult to find the leopard frog, in more isolated spaces like the prairies, far from the "crowded" marshes. Even the mountain is a fairly sought-after destination: some specimens sometimes take refuge at more than 3 thousand meters, where temperatures are often very rigid.

What is not done for a little silence!

Seeing the haul blowing from under the nose is a drawback that some animals know very well . This time, however, it fell to a fisherman to remain dry. At the time of withdrawing the Valery Krugersky network, intent on fishing in a lake near Chernigov, in Ukraine, he saw a large frog leap out of the water and steal its trapped fish. The thief, not at all intimidated, swallowed the whole prey and then stopped a bit nearby to digest it. The stunned fisherman has nothing left but to take a picture. After all, frogs are carnivorous, although they usually feed on insects and small invertebrates.
The most beautiful pictures of frogs (slideshows)
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This full and satisfied face will soon change: in a few weeks the mouth of the tadpole will widen until it becomes as wide as the whole head, the body will separate into two distinct segments, head and trunk, and the long-awaited front paws will appear. At that point the little guy - here under the microscope - will be almost ready to leave the water and change "menu". During the development phase, in fact, tadpoles are generally vegetarian and feed on the algae present inside their pond (some for reasons of adaptation, are born omnivores and are satisfied with the debris that settles on the bottom of the water). But upon completion of the metamorphosis the intestine changes to prepare itself for the new diet: the adult specimen, frog or toad, will be greedy for small invertebrates.

Don't miss the slideshow dedicated to frogs!

[EI]

Try not to stare too long at the eyes of this Costa Rica tree frog. Blue and mottled as they are, you risk being hypnotized!

But the magnetic gaze is not the only particular characteristic of the small amphibian of the Centrolenidae family, which often does not reach 3 centimeters in length.

The frog diffused above all in the tropical latitudes, is also famous for having in correspondence of the belly, a translucent and semitransparent skin, that allows to see the internal organs. This curious attribute earned her the nickname "glass frog". Don't miss the photo gallery on transparent animals
Watch also the slideshow dedicated to the most crazy frogs in the world
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Compared to other mothers in the animal world it is lucky: immediately after spawning its companion remains to guard the nest, protecting the unborn from predators. The idyll, however, lasts only about ten days. Then it is easy for the future father, who in the meantime remained sexually active, to go his own way. If the young of pygmy Dendrobate (Oophaga pumilio) - a poisonous frog of a couple of centimeters widespread in the forests of Central America - reach adulthood it is mainly thanks to the mother, who for 6-8 weeks feeds them with the eggs remained fertilized. Despite all this attention, only 5-12% of the brood arrives at the tadpole stage.

The most curious frogs in this slideshow (watch)

Dedicated to all "human" mothers on the day of their party

[EI]

You might also like: The kamikaze love songs of tungara frogs A small step for man … a great leap for a frog Look at it well because without the help of a photographic zoom this frog (Theloderma corticale) is practically impossible to find.
This is thanks to its bumpy skin full of green and brownish protrusions that recalls the texture and colors of moss. The ideal disguise to perfectly disguise yourself in the humid tropical forests of Vietnam, where it lives.
Seeing it up close is therefore a rather rare event, and not only because of its mimetic abilities: the progressive deforestation of its natural habitat is seriously endangering its survival, especially as this tree frog - which as an adult is about 7 centimeters long - it often lurks and reproduces inside the trunks of trees, in cavities where some rain water is deposited.
Moreover, the particular structure of its skin often makes it the subject of an illegal trade that forcibly removes it from its ecosystem.
The whole wrinkle look of a Peruvian frog
A frog that certainly does not go unnoticed: it is blue!
[EI]