Behavior: Time Bombs on Legs

Fire burst from its open mouth, its eyes glowed with a smouldering glare, its muzzle and hackles and dewlap were outlined in flickering flame. Never in the delirious dream of a disordered brain could anything more savage, more appalling, more hellish, be conceived than that dark form and savage face.

It is as if the vicious hound of the Baskervilles that burst upon Sherlock Holmes out of the fog has returned to haunt the streets of America. The creature last week attacked a 71-year-old woman in Stone Mountain, Ga., dragging her across her driveway and savaging her so badly that she...