How exactly does a newly-hatched spider weave a perfect web that is characteristic of his or her species—without ever even having seen such a web, let alone having been trained to spin one? How do ...

A stroll through the world of animals and men : a picture book of invisible worlds / Jakob von Uexküll -- Companionship in bird life : fellow members of the species as releasers of social behavior / ...

Some dogs are born with a powerful instinct to chase, stalk, and pursue. These traits once made them exceptional hunters, herders, or working companions. Known as prey drive, this natural behavior ...

Instinctive parents follow their gut when parenting decisions, rarely relying on outside sources for advice. They protective of their kids, and can nearly always recognize their child's cues, whether ...