Humans use the wisdom of dolphins to solve many mysteries in the world's oceans. Dolphins are the only marine animals that have passed the mirror image test. Compared with their size, dolphins have large brains. Can express different types of emotions. At rest, the dolphin's brain establishes a sense of protection at rest.

2. otter skin

Otter is the smallest marine mammal in the animal kingdom. They used to live on the banks of rivers and beaches. Sea otters use tools such as stones to find food. Sea otters can keenly perceive the existence of predators by capturing the vibration difference of water. The naive behavior of the sea otter itself embodies its wisdom. It can dance and slide in the river bank and mud.

Step 3 imitate

According to many scientific theories, human beings evolved from apes. Apes follow extreme social life and express different types of emotions. The family of apes includes chimpanzees, gorillas and bonobos. Gorilla DNA is similar to human DNA. Apes can understand personalities, learn words and even human language. Will use tools to resist the enemy.

4.crow

Crow is one of the most abundant birds in the world. They are not afraid of human existence and have puzzling innate wisdom. They are smart enough to cause trouble to mankind. The skills used by crows in finding food and building nests reflect the unparalleled wisdom of this bird.

Crows use different tools, such as stones and pebbles, to attack predators in the bird world. Crows look at the human world more closely in search of food. For example, crows used to throw nuts on traffic lines to break their shells to get food.

They are smart enough to recognize faces and hide food from other birds. Crows are also famous for using different tools because of their own advantages.

5.octopus

Octopus is the cleverest and most sensitive creature among invertebrates. They perceive the existence of the enemy and show the intelligent power of octopus in various ways. Small octopus can easily learn the habits of other octopus. Octopus releases a black ink, and when it is discovered by others, it has the ability to keep its sense of smell. Octopus has the ability to change its body shape in many places to avoid predators.

6, ants

As the smallest member of the animal kingdom, ants are not very big. Ants evolved in the era when dinosaurs roamed the earth. Some special kinds of ants enslave other species to establish their own social groups.

Ants can carry objects 50 times larger than their bodies. Because their muscle thickness is directly proportional to their body shape. Ants travel by tracking pheromone chemicals placed by reconnaissance ants who are responsible for finding food.

Interestingly, each ant will provide clues for the ants below. Ants form well-planned ant colonies, which are thousands of miles long, and different parts are used for farming, gathering food and collecting food. Each ant colony has a unique chemical feature, through which they can identify strangers.

7. dogs

Man's best playmate, dogs know the human world better than other animals. Their brains can recognize millions of smells and respond to their owners' commands. Have an excellent sense of smell and the ability to learn from the human world.

8. Pig

Pigs are one of the cleverest, most interesting and most sociable animals in the animal kingdom. According to seven studies, pigs have better cognitive abilities than dogs and human babies. Pigs have a fascinating social life. They walk, eat and play together. They slept soundly.

Pigs communicate with each other in 20 different ways, and even newborn pigs can understand the true meaning of the sound made by sows. Wild boar used to be a place where new plants were planted, and it also played an important role in seed transportation.

9.whales

Because of its huge size, training whales is an arduous task. At the same time, whales' social behavior, communication ability and imitation ability also make them one of the smartest animals. Cognitive ability is realized by the existence of spindle cells in the brain. They are very sociable, traveling and hunting in groups. Whales communicate with each other by making complex tones.

10, elephant

Elephants are also one of the faithful playmates of human beings. They are very social animals, and it is easy to learn from their surroundings. Elephants can recognize hundreds of different sounds and imitate them. Using different tools to find food, elephants can show a series of emotions, such as joy, frolicking and sadness.