How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?
That earns this fish, Electrophorus voltai, the title of the strongest known living source of electricity.
The feathery glint startles their rodent prey, making them easier to catch.
The border collie achieved international fame for her remarkable grasp on vocabulary and sentence structure.
Deep sleep and REM sleep could be universal among vertebrates, stretching 450 million years back in evolutionary time.
In the late 1970s, a harbor seal named Hoover began catcalling passersby at the New England Aquarium in a thick Maine accent. A new study confirms seals’ uncanny ability to copy human speech.
Wolves lack the facial muscles required to raise their eyebrows—a feature that makes dogs especially endearing to people.
Some African mole-rats seem to tolerate the burn of spicy plants or biting insects that cause most other animals excruciating pain.