Kelly the dolphin gamed her own reward system, then taught the trick to her calf — echoing real tool-use traditions found in wild dolphin populations.

Add Yahoo as a preferred source to see more of our stories on Google. In this photo provided by the Shark Bay Dolphin Research Project, a bottlenose dolphin wearing a marine sponge on its nose to ...

WASHINGTON — Some dolphins in Australia have a special technique to flush fish from the seafloor. They hunt with a sponge on their beak, like a clown nose. Using the sponge to protect from sharp rocks ...

Bottlenose dolphins in the Adriatic Sea are spending so much time behind fishing trawlers that the pattern now looks less like opportunism and more like dependence. In some waters off Italy, dolphins ...

While standing in shallow water watching dolphins, this family had an unexpected close encounter when one dolphin swam right ...

Brazil's Fishing and Aquaculture Ministry is outlawing the fishing of a certain breed of catfish for the next five years. Not to protect the bottom-feeding catfish, but to protect the freshwater ...

WASHINGTON (AP) — Some dolphins in Australia have a special technique to flush fish from the seafloor. They hunt with a sponge on their beak, like a clown nose. Using the sponge to protect from sharp ...