Mammalian dolphins are any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) or the mammal families Platanistidae...

Most dolphins are among the smaller species of toothed whales, measuring less than 3 meters (10 feet) in length.

Dolphins are swift swimmers; the bottlenose dolphin can attain speeds of nearly 30 km/hr (18.5 mph) in short bursts, and common dolphins are even f...

Dolphins are popularly noted for their grace, intelligence, playfulness, and friendliness to humans. Bottlenose dolphins, familiar performers in oc...

According to the International Union for Conservation of Nature, several dolphin species are at risk of extinction. Those considered vulnerable or...