Richard Collins: Stress in the city — for animals as well as people

Chronic stress is difficult to quantify but cortisol, a hormone released when stress is experienced, can leave a trace in hair tissue for weeks or months so scientists examined this to see if urban coyotes are more stressed than their rural counterparts

A study has found that coyotes living in inner city areas have higher cortisol residues, and therefore higher stress levels, than ones living in the leafy suburbs or relatively natural areas

Uneasy lies the head that wears a crown.

Being top dog seems glamorous but, as a study just published shows, it has its downside. Responsibilities come with kingship — noblesse oblige.