Previously undocumented, this tiny extra digit – called a "pseudothumb" – is a structure on each wrist made of bone and cartilage.
Research suggests that people can learn to read cats' facial expressions.
Death is a natural part of ecosystems. But it's unusual for a large number of animals to all die at once. Researchers are investigating how a mass mortality event affects what's left afterwards.
Negro Matapacos became famous in Chile in 2011 for joining student protests. His image has now popped up around the world.
Wildlife can smell and hear a fire coming, and have developed novel ways to evade it. But they must watch out for cunning predators rushing in for a feed.
A new study analyzes the language in nearly 680,000 pet adoption ads.
Trump's recent comments echo a troubled history of the use of dogs against people of color, as well as pejorative depictions of people of color as animals.
Species counts drive conservation science and policy, yet a major component of biodiversity is excluded from the data: non-native species.
Scientists have tracked endangered species for years. Now they're figuring out how to highlight animals and plants that have recovered – but what does that mean?
Prey species rely on camouflage and escape to avoid getting eaten. How can they make them work together?
Do animals have their own culture? A researcher studying the culture of whales argues that they do. She says understanding that may be one way to save them from extinction.
Pet theft can devastate families and cause animals significant distress – the law needs to change.
The new law is largely symbolic so the ACT can boast animal welfare credentials without putting animal-related industries offside. Still, it could create positive change.
Scientists have discovered how the wise old barn owl is so good at catching rodents.
Some animals, like rats, learn linguistic patterns better than humans can.
Black rats are originally from India and brown rats are originally from China.
How and why animals develop as male or female is far more complex than we ever imagined.
Understanding happiness in chickens could tell us how to improve their housing.
Evolutionary quirks found in the animal kingdom protect against common diseases.
Cats and humans have different ways of communicating and sometimes that can lead to problems.