A team of marine biologists in Tenerife, Canary Islands, have caught on video a rare black devil fish for the first time in ...

Animal cartoon characters offer timeless lessons and entertainment to audiences. Read more details about the most famous ...

With bloated bellies and hairy legs, female flies try to look bigger to get food from courting mates. But male flies, in turn ...

Scientists published a full genetic sequence of the genes that make some white campions male, and hope their work could ...

Las Palmas is a popular place to base a Canary Islands vacation. Not only is it the Canaries' largest city, it's also got a number of world-class attractions. Its beach — the 2½-mile Playa de ...

The Alabama legislation, which passed the Senate Thursday, would create legal definitions of male and female based on the reproductive organs at birth. At least nine other states have already ...

The arrival of a baby swell shark at an aquarium in Louisiana has caused a wave of excitement, after the egg hatched despite ...

The president put out a sweeping order on his first day in office last month that called for the federal government to define sex as only male or female and for that to be reflected on official ...

New research at the UO reveals that they have been using one that has existed for 480 million years. The octopus has just ...

Researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has likely been around for 480 million years, since before octopuses split apart from the nautilus on ...

New research has revealed that a hairy crustacean—dubbed "The Hoff crab" when it was discovered in 2010—is the first species ...