It can be a particularly stinky problem for dog owners at this time of year.

Obsessive-compulsive disorder (OCD) affects some 1-3 percent of the human population and for some can be severely debilitating. It would be highly surprising, according to the tenets of “one medicine, ...

A tiger walks the same worn groove along the edge of its exhibit like a broken record. A parrot methodically plucks out its own feathers until bare skin shows through. To a casual visitor, these can ...