Top 8 animals are on the verge of extinction

Climate change is affecting most organisms. Scientists fear that the 6th major extinction with 75% of species will disappear forever.

Among the species facing extinction, the most serious threat is the following 8 species, according to the publication of Popular Science magazine:

Cranes of America (Scientific name: Grus americana)

American Cranes - (Photo: Joel Sartore / Getty Images).

The group of American cranes is concentrated mainly in the Arctic wetlands, which are covered by natural "ramparts".

The warmer weather makes this protective layer narrower, making young birds more vulnerable to predatory predators. Along with that, strong storms also killed many young cranes.

The annual migrations of American cranes to Texas are also potentially risky, such as the previous drinking stops that have dried up, forcing this crane to fly more to find water.

Frog clown (Scientific name: Atelopus sp)

Frog clown - (Photo: Gregory MD / Getty Images).

There was a time when clown frogs were widely distributed throughout Central America. Now more than 10 species of Atelopus genus are thought to be extinct.

El Nino has dispersed the clouds higher up in the Andes, causing the ideal cold and moist environment for the frog to grow. In contrast, in drought areas, frogs are "baked".

Big panda (Scientific name: Ailurodpoda melanoleuca)

Large panda - (Photo: Joel Sartore / Getty Images).

In central China, 1,800 wild pandas face the risk of depleting food. Large pandas must change to adapt to nutrient-poor (bamboo) food. To survive, they have to cut down on food intake by about 13.5kg a day.

Slowly growing bamboo forests have pushed large pandas into a recession because even though the living conditions are not enough, they cannot go anywhere else because bamboo forests cannot be brought along.

Snow Leopard (Scientific name: Panthera unica)

Snow Leopard - (Photo: Joel Sartore / Getty Images).

This species of dense hairy leopard grows very well at an altitude of 3,000-5,500m above sea level in the Tibetan plateau region.

However, rising temperatures push snow leopard and their prey to higher areas, making snow leopard live on separate peaks.

Rising temperatures also make other predators like leopards often able to live up high although the former is in lowland forests.

People also climb up to feed cattle. Sometimes they kill predators that threaten their cattle.

Koala Bear (Scientific name: Phascolarctos cinereus)

Koala Bear - (Photo: Joel Sartore / Getty Images).

This wombat relies on eucalyptus: food, water and food, although the leaves are poisonous with low concentrations.

However, more and more carbon dioxide in the air makes eucalyptus leaves less nutritious but more toxic. Moreover, prolonged droughts throughout Australia withered the eucalyptus canopy, which means that Koala is getting less and less drinking water.

Mountain reindeer (Scientific name: Rangifer tarandus caribou)

Reindeer mountains - (Photo: Joel Sartore / Getty Images).

Thick snow in the North American mountains has long helped mountain reindeer to avoid competitors of food sources. However, warming temperatures have attracted other deer to come here, and another uninvited guest is a wolf.

At the same time, rapid evaporation of icebergs causes more rain. However, rainwater is frozen on mountain peaks, burying vegetation is the food of mountain reindeer.

Triangle butterfly fish (Scientific name: Chaetodon trifascialis)

Triangle butterfly fish - (Photo: Joel Sartore / Getty Images).

These striped fish are picky eaters because they only select table coral reefs. But rising temperatures cause bleaching that kills these coral reefs, making triangular butterfly fish lose their habitat.

This fish can find some temporary shelter while waiting for corals to recover, however, the process requires the sea to be cold and quiet for more than a decade.

Adelie Penguin (Scientific name: Pygoscelis adeliae)

Adelie Penguin - (Photo: Joel Sartore / Getty Images).

This penguin species nest on the surface of arid rock. Elevated temperatures in the west of Antarctica have caused many avalanches, resulting in many puddles, sinking the bird's habitat.

Cold weather combined with wetness is dangerous for young birds when they have not developed a waterproof coat. Even many children cannot be born because they are caught in cold bogs.