Archaeologists have now found traces of a plant-based poison on several 60,000-year-old quartz Stone Age arrowheads found in ...

Crocodiles have a powerful shape and rugged texture that make them an exciting subject for drawing practice. This tutorial ...

Creating a black bear drawing is a rewarding way to explore animal anatomy, form, and natural movement. This video walks ...

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 regulation ...