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Dolphins are very smart and playful animals. Although they live in the water, dolphins are mammals just like humans and need air to breathe, which they do out of a blowhole on the top of their heads. In fact, dolphins ca... More »

www.reference.com Pets & Animals Marine Life

One interesting fact about dolphins is that they use many unique ways to communicate with one another. They also use high-frequency clicking sounds to investigate their surroundings. More »

www.reference.com Pets & Animals Mammals Marine Mammals

The Delphinidae family contains 36 species of dolphins, including killer whales. Dolphins travel in groups called pods and use echolocation to navigate the ocean. They communicate with one another using distinct whistles... More »

www.reference.com Pets & Animals Mammals Marine Mammals
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In spite of the bottlenose dolphin's gentle appearance, All About Wildlife explains that these animals are in fact apex predators. While great white sharks, tiger sharks and bull sharks occasionally prey on young dolphin... More »

www.reference.com Pets & Animals Marine Life

Dolphins have great vision, although they can only see limited colors. They live in the water, but they do not drink from it. Instead, they get any necessary moisture from the food they eat. More »

www.reference.com Pets & Animals Marine Life

Evolutionary biologists believe that dolphins emerged 20 to 25 million years ago during the early Miocene period. Modern species may trace to kentriodontids, which are small-toothed whales believed to have the echolocati... More »

www.reference.com Pets & Animals Marine Life

Dolphins hear when the sounds in the water bounce off the dolphin's jaw bone into the middle ear. Dolphins can hear far better than humans and their hearing is even better than that of dogs. More »

www.reference.com Pets & Animals Marine Life