Grizzly Bear Cub Using a Tool
One afternoon I observed this grizzly bear cub using a small stone to scratch his belly. Tool use, such as chimpanzees dipping blades of grass into termite mounds, has long been considered a hallmark of higher intelligence in animals. This bear cub, not even a year old, was using a rock as a scratching tool. It is my belief that brown bears are one of the most intelligent mammals in North America, and that they share many mental faculties observed in primates.