Such traits don't always mesh well with a harness and lead, yet some owners still take their pets outside.But is this appropriate, or just stressful? And when can an outing actually benefit a ...

The Asian swamp eel is an air-breathing, mud-loving predator spreading throughout the United States. These slithering threats are hard to detect and built to survive conditions that affect native fish ...

Nature is full of surprises, but few are as fascinating as hybrid animals, creatures born from crossing two different species ...

On all continents and across all oceans, there is an incredible display of natural events in which animals tend to congregate in staggering numbers. These events, whether due to migration, breeding ...