For spotted hyenas, sibling rivalry can often be a matter of life and death.
What are heat and cold receptors and how do they help regulate skin's temperature?
It's not just humans, sheep, dogs, and horses that can recognize faces.
Audio storytelling has a unique power of transport unmatched by other media.
New grassland conservancies are giving a home for the bison to roam, as they once did before going nearly extinct during the 19th century.