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Dolphins are friendly and social animals; they are well-known for
their playful behaviour.
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The killer whale also belongs to the dolphin family.
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A dolphin cannot breathe underwater. It uses a blowhole on
the top of its head to breathe.
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Dolphins communicate with one another by clicking,
whistling and other sounds.
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Dolphins are among the smartest animals on the Earth. They also have
the longest memory in the entire animal kingdom.
![](https://sawanonlinebookstore.com/wp-content/uploads/2022/01/6-101.jpg)
Dolphins love to have fun by jumping out of the water and playing
with one another.
![](https://sawanonlinebookstore.com/wp-content/uploads/2022/01/7-99.jpg)
Dolphins are often seen interacting and playing with humans.
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Dolphins are carnivores and mostly eat fish and squid.
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Dolphins are so caring that they have been seen protecting
humans from sharks.
![](https://sawanonlinebookstore.com/wp-content/uploads/2022/01/10-97.jpg)
Dolphins save their energy by swimming next to the ships following
the bow waves. This action is called ‘bow-riding’.