Dolphins are considered to be the most intelligent animals in the animal kingdom. They are regarded as humans of sea.
Among mammals after chimpanzee, dolphins are considered the wisest following dolphins, the pig is the third wisest animal and next comes the dog.
Dolphins use sound waves to communicate with each other and also to communicate with humans. They are considered as the friendliest animals.
There are 41 species of Dolphins out of which 37 are oceanic species and 4 species belong to the river.
A group of Dolphins is called a school or pod and male Dolphins are called bull while female dolphins are called as cow. Young ones of the dolphins are called as calves.
Dolphins can swim about 18-22 kilometers per hour. If food is available even 1000 dolphins can live together in a pod.