The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition ...

The question of what non-human animals experience is front and center in the zeitgeist. The acclaimed book An Immense World, by science journalist Ed Yong, delves into the remarkable sensory ...

Scientists suggest Earth's earliest animals reproduced asexually, slowing evolution and delaying the biodiversity boom that ...

When I taught introductory and advanced courses on animal behavior, many students woke up when I talked about the sex lives of a wide variety of animals. While there were a good number of books that ...

The newly discovered fossil records suggest that mold-like single-cell organisms "set the stage" for the animal kingdom to evolve, the researchers wrote in a new report, published in the journal ...

A Canadian geologist may have found the earliest fossil record of animal life on Earth, according to a report published Wednesday in the journal Nature. Subscribe to read this story ad-free Get ...

As you read this, the screen is probably flashing over 240 times per second, yet, as a human, you won't notice this flickering light. However, to a fruit fly hovering above your head, the screen would ...

All animals are related to each other, but comb jellies — a marine invertebrate found in oceans around the world — are the most distantly related to all other animals, shows a new study in Nature.

Kali Holder, a veterinary pathologist at the National Zoo, is motivated by problem-solving and a passionate curiosity about nature. Image: courtesy of Kali Holder When an animal becomes endangered, it ...