Las Vegas’ Mirage casino temporarily shut its dolphin habitat Tuesday after an 11-year-old dolphin died — the third animal to die in the enclosure this year. K2, a bottlenose dolphin, had allegedly ...

Dolphins are known for what appear to be big, contagious smiles. But do they actually, well, smile? The answer, according to a new study of dolphin play, is a resounding “maybe.” Dolphins use their ...

A miles-long cluster of dolphins has been filmed leaping and gliding across Carmel Bay off the central coast of California, forming an unusual “super pod” of more than 1,500 of the marine creatures.

We’ve all heard that dogs are a man’s best friend, but our canine companions don’t make up the entirety of humankind’s friend circle. Humans have cooperated with wild animals throughout our ...

Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans. Here's what they think is going on. Pacific white-sided dolphins swim off ...

Bottlenose dolphins’ signature whistles just passed an important test in animal psychology. A new study by my colleagues and me have shown that these animals may use their whistles as name-like ...

Li'i, the last Pacific white-sided Dolphin at Miami Seaquarium, was one of several animals relocated last year from Miami Seaquarium. Miami-Dade County says the park is now behind on its rent. Saying ...