Stress is an actor in all our lives. As we grow up, our stress grows too. We perceive that stress as a sign that we are coping with more than our historical share. Every generation believes that their stress surpasses that of the generation before. So it is probably just an illusion — or delusion. What’s most important is how we cope with stress. Not all stress coping mechanisms are learned. Some are probably encoded — they come for free with our genetics. It can be easier to see these mechanisms in action by observing animals — particularly pets, whose behaviors we know intimately. Take, for example, two very different species that we have had as pets over the years — Terri the tortoise and Kushy the ferret. Terri comes from an ancient lineage of chelonians (Greek word for tortoise), who have walked and swam upon the Earth for hundreds of millions of years. Kushy the ferret is of the Mustelidae family — weasels and skunks. Kushy was a descendant of a domesticated breed of ferrets that first became pets about four thousand years ago. We bought Kushy at a pet store; Terri was a rescue. Terri’s natural habitat is…