What interesting animals have you seen in your life? I believe many people will think of cats and dogs. They often do some stupid or cute actions, which look interesting. But seriously, these are very weak, because in front of the most interesting animals in the world, you will know what is really interesting!

Hummingbird 65438 +0, fly backwards.

Everyone must have heard of hummingbirds. It is the smallest bird in the world, with an average weight of only 2 grams! But that's not what makes it interesting. What is really interesting about the hummingbird is that it is the only bird that can fly upside down. Watch it flap its wings, and you will find it retreating. Because of this behavior, hummingbirds are called the most interesting animals in the world by many people.

No.2 Hogan, 24 hours without sleep.

Hogan is a different animal. It looks like zebras and giraffes, but it has nothing to do with them. It has two interesting places: first, Hogan's tongue is long and You Lan, so he can wash his face while eating; Second, Hogan is full of energy. He can only sleep for a few minutes 24 hours a day, and then he is alive and kicking!

Zebrafish No.3, similar to human organs.

Zebrafish, a seemingly ordinary fish, but after understanding it, many people will think it is the most interesting animal in the world! Because zebrafish is similar to humans, including spine, brain, liver, heart, pancreas, kidney and bones, medical experts are studying some connections between zebrafish and humans, so the scientific community is trying to find out whether they are helpful to human medicine.

Fourth Chihuahua, a slap in the face

There are many kinds of pet dogs. They are all interesting, but only one thing that is really interesting is its size. It is a chihuahua, which is only the size of a palm when it grows up. It is the smallest dog in the world. Chihuahuas can even be held with spoons when they are born. When you grow up, it is only 9.65 cm long and can be placed in the palm of your hand. It looks really interesting.

Wood frog No.5, frozen by itself

Wood frogs, animals living in the Arctic, have an interesting feature: they freeze themselves and stop beating in bad weather. When the environment is bad and food is hard to find, the wood frog freezes itself. When the temperature in this area rises, they will wake up again. Scientists are also very interested in this feature, and they are trying to solve this mystery.