Social behavior consists of a set of interactions ... is a powerful demonstration of natural selection at work. Vampire bats (Figure 3) returning from an unsuccessful foraging bout will beg ...

Vampire bats, with their eerie reputation and unique ... These devices can be bulky and disruptive, potentially affecting the natural behavior and physiology of the flying animal.

Most mammals respond to the demands of exercise in the same way, by breaking down carbohydrates and stored lipids (fats) in their bodies, releasing the energy they need to keep functioning.