To understand the full relationship between brain activity and behavior, scientists have needed a way to map this relationship for all of the neurons across a whole brain—a so far insurmountable ...

Empathy in animals encompasses a range of processes whereby individuals perceive, share, and respond to the emotional states of conspecifics, often leading to demonstrably prosocial behaviours.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Same-sex sexual ...

Why can't we stop anthropomorphizing our animal friends and foes? Illustration by Emily Lankiewicz / Orca image from Christopher Michel via Wikimedia Commons under CC-BY 2.0 / Bird and dolphin via ...

A new study from Spanish researchers contradicts the long-held belief that same-sex sexual encounters have been common in all species since their appearance in the animal kingdom. While the behavior ...

A friend of mine recently sent me a beautiful and moving photo essay published by Isa Leshko capturing the "beauty and dignity of elderly animals" "in their winter years". As I looked at each of the ...

Best known for its presence in house cats and a tendency to infect and alter the behaviors of rodents and humans, the parasite Toxoplasma gondii (T. gondii) is also associated with bold behavior among ...

On Aug. 21, 2017, a solar eclipse shrouded The Riverbanks Zoo and Garden in Columbia, South Carolina, in near-total darkness for 2½ minutes. In the time leading up to the darkness, during it, and ...