The menstrual cycle plays an essential role in human reproduction. However, most other animals don't experience menstruation. So, which other species have periods, and what's the evolutionary ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. If animals could talk, how would they say they are feeling? While ...

What do animals know about death? It's a question Charles Darwin himself pondered. "Who can say what cows feel, when they surround and stare intently on a dying or dead companion?" the biologist ...

Countless dirty secrets swirl around the way animals on factory farms live, but an even uglier one may be the way they sometimes die. “If everyone had to work a day in a meatpacking plant ...

Just as AI and other cutting-edge tools create unprecedented opportunities for understanding and protecting nonhuman animals, they also pose serious risks of further manipulation and exploitation.

Do nonhuman animals live in a kind of eternal present, or are they aware of the passage of time? That question has been debated by scientists for decades. Most experts agree that animals have some way ...