The dolphins living in the sea are mammals and are known for their friendliness. Their behavior is extremely special to humans at the same time. Compared to other animals, dolphins are considered very intelligent. Did you know that dolphins only use half of their brain at bedtime? There are more than 40 species of dolphins, the most common are bottled dolphins. Dolphins are carnivores. Today, we're going to tell you some facts about them.

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Dolphins can identify themselves by looking at mirrors and admire themselves.

Staying with mothers is in the nature of dolphins before they leave their pack, some of them live with their mothers for 3 or 8 years!

Dolphins have the longest memory in the entire animal kingdom.

Dolphins have two stomachs, one is used for storing food and the other is used for digestion.

Dolphins communicate with each other by clicking or whistling and by making other sounds.

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Dolphins are famous for their playful behavior and one of their most attractive gaming performances is to create bubble rings.

The U.S. Navy has 75 trained dolphins to detect enemy swimmers and underwater mines.

Dolphins are known to be great divers. Being the animal of the sea, they can dive 1000 feet underwater.

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Some species of dolphins are at risk of extinction, often directly resulting in human behavior. The Yangtze River dolphin is a type of Dolphin species, which may have recently become extinct.

The killer whale is the largest member of the dolphin family. They can reach 30 feet in length and swim as fast as 30 mph.

Although the average lifetime of a dolphin is 15 years, some of them survive up to 50 years.

Some fishing methods, such as the use of nets, kill a large number of dolphins every year.

After bonobos and humans, dolphins are the only animal species that can have sex just for pleasure.

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Dolphins sleep with one eye open.

Dolphins never chew their food, they swallow it completely, their teeth are used only to catch their prey.

Dolphins can talk to each other on the phone and understand.

Dolphins can swim quickly than up to 25 mph, although they usually swim at speeds of 7 to 8 mph.

The male dolphin is called a "bull", and the female dolphin is called a "cow".

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Although the dolphin has very delicate skin, the slightest scratch of the hard surface makes it injured, due to their rapid healing characteristic, larger to larger injuries can also be cured in a short time.

The smallest dolphin is about 4 feet long while the largest can reach 30 feet in length. Their weight can be more than 90 pounds to 11 tons.

Dolphin meat is consumed in Japan and Peru.

The dolphin does not have any vocal cords.

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