10 animals' cold knowledge that will break your perception of them (2) 10.Millipedes are able to secrete cyanide 09.Butterflies and ants 08.If female ferrets enter estrus but cannot mate, they will die 07.Dolphins do not mate to breed, but to be happy06.Hummingbirds cannot walk 05.Shrimps with pistols 04.Chastity belts of nature 03.Some frogs use their lungs to listen to sounds 02.Octopus tentacles 01.Pigs have orgasms

<h1 class="pgc-h-arrow-right" data-track="3" >10.Millipedes are able to secrete cyanides</h1>

Millipedes move slowly and feed on plants. But these seemingly harmless little insects can release hydrogen cyanide gas, a substance deadly enough. However, this insect is generally only found in North America and is also known as the Kentucky flat millipede.

The larvae of the Great Blue Butterfly feed mainly on wild thyme or marjoram orchids in the first few days of life. After that, they will look for a nest of a specific red ant and hibernate in their tunnel. The caterpillar will also take 3 weeks to become an adult big blue butterfly.

Amazingly, during these three weeks, the red ants in the nest not only do not attack the larvae of the great blue butterfly, but also protect the butterfly larvae from harm. Red ants guard the larvae in flocks against any predators who try to attack it.

Of course, this protection is not free, and the great blue butterfly larvae, in addition to providing honey juice to the red ants, will also absorb the smell of the red ants and imitate the sounds of the ants. Once the caterpillar enters the cocoon, it rubs its head against the wall of the cocoon, making the scratching sound of red ants.

Ferrets are toxic to estrogen, and when female ferrets enter estrus, if they cannot mate and reproduce, they will stop producing red blood cells in the bone marrow due to excessive concentration of estrogen, and finally die of aplastic anemia. When the female ferrets have mated, they can get rid of the estrus period and survive.

<h1 class="pgc-h-arrow-right" data-track="10" >07. Dolphins do not mate for reproduction, but for pleasure</h1>

Dolphins are the only animals on Earth that mate not just to breed (and one is human). Not only that, but there will also be same-sex sex between dolphins.

Not only that, but dolphins also have sex with other dolphin species, which has led to the existence of a wide variety of hybrid dolphin species in the world. Occasionally, dolphins also exhibit sexual behavior towards other animals, including humans.

There is a misconception about hummingbirds that hummingbirds don't have feet. Of course, this is wrong. However, although hummingbirds have feet, they do not use their feet to walk. This is because they spend most of their time in flight, and the function of the feet has degenerated to the point that only the standing function is left.

Hummingbirds also have a very fast metabolism, which means that they must eat again a few hours after eating, or they will starve to death.

The Pistol Shrimp is supposed to be one of the few animals with its own ranged weapon. When it bites its paws, it creates a vapor bubble that is pressed hard enough to kill nearby small fish and then eat them.

Incredibly, when the bubbles burst, temperatures of up to 5,000 K are generated, close to the temperature of the sun's surface.

Amazing fact: Males of some species (including bees, baboons, squirrels, scorpions, rats, and spiders) produce a "mating plug" after mating that prevents other males from having sex with the same female.

For example, when a male bee has sex with a queen bee, its entire genitals fall off to form a plug to block the queen bee's mating organs. Future male bees who want to mate with the queen must forcibly unplug the plug left by the male bee.

Panamanian golden frogs have no outer ear — their lungs receive sound waves and direct them to the eardrum. This unique method of receiving sound has the advantage that since the internal air pressure is controlled by the frog, it can basically ignore its own sound,

One of the male octopus's tentacles is used for mating, and during mating, the tentacles break off from the body. And this tentacle, like other tentacles, is regeneratible.

After a lot of experiments and studies, scientists found that pigs have orgasms that last for 30 minutes.