A rhesus macaque on Cayo Santiago, which is less than a mile east of Puerto Rico. Rhesus macaques spend upwards of 20 percent of their time engaged in cooperative behaviors like grooming. Andi ...

In the fascinating underwater world, gender is far from fixed. Many aquatic animals can change their sex, a unique biological process known as sequential hermaphroditism. This natural adaptation ...

Imagine being able to change your colour to disappear into the background, signal your feelings, or regulate your body temperature. Sounds like science fiction, right? But in the animal kingdom, this ...

An intense heatwave that gripped Mexico in May 2024 killed more than 50 howler monkeys. Humans can escape these consequences of rising global temperatures up to a point by taking refuge in ...

Color change in animals is a response shaped by evolution. Each species has developed its own method and reason for this ...

Climate change is melting away glaciers around the world, but in the Andes Mountains, a wild relative of the llama is helping local ecosystems adapt to these changes by dropping big piles of dung.

Hundreds of animals, from tiny ants to mighty hippos, are shaping the Earth’s surface as powerfully as floods and storms. These animals effectively act as landscape engineers, reorganising soils and ...