Animal physiology is the scientific study of the life-supporting properties, functions and processes of animals or their parts. The discipline covers key homeostatic processes, such as the ...

(AP Photo/Rodrigo Abd) Dr. Jorge Fusaro cools off by a stream during a rest from descending the Cerro Chañi, after completing his medical tour of the rural communities scattered across the mountain ...

Chañi is considered a sacred mountain by the indigenous Kolla people who live there. It has extreme temperatures, year-round snowy peaks, and is home to animals full of symbolism, like the puma ...

Chañi is considered a sacred mountain by the indigenous Kolla people who live there. It has extreme temperatures, year-round ...

Some 450 mostly rescue or disabled animals are housed at Happy Pants Ranch. 34 animals were rescued from a property littered with waste and hundreds of empty cans in Walsall. The RSPCA sees 260 ...

“If we still lived in caves, we’d miss predators, for example — waking up during the night is how animals protect themselves ... up for insomnia,” says Kolla. “Also, using untested ...

The words reindeer and caribou are largely interchangeable, but depending on where you live, there may be different naming conventions. In Europe and Asia, these animals are always called reindeer, ...

From a pink dolphin slinking through the Amazon's waters to the sight of monarch butterflies filling the skies of Mexico, this year's best photos will take you on a journey across the planet.

This breakthrough reshapes our understanding of the genetic origins of stem cells, offering a new perspective on the evolutionary ties between animals and their ancient single-celled relatives.

Ms. Renkl is a contributing Opinion writer who covers flora, fauna, politics and culture in the American South. We were living in a cataclysmic age of mass extinction and climate instability even ...