One of my old favorites

How to tell the difference between a black bear and a grizzly bear:

Warning: The National Park Rangers are advising hiker’s & biker’s in Glacier
National Park and other Rocky Mountain parks to be alert for bears and take
extra precautions to avoid an encounter.
They advise park visitors to wear
little bells on their clothes so they make noise when hiking & biking. The
bell noise allows bears to hear them coming from a distance and not be startled
by a hiker or biker accidentally sneaking up on them. This might cause a bear to
charge.
Visitors should also carry a pepper spray can just in case a bear is
encountered. Spraying the pepper into the air will irritate the bear’s sensitive
nose and it will run away.
It is also a good idea to keep an eye out for
fresh bear scat [droppings] so you have an idea if bears are in the area. People
should be able to recognize the difference between black bear and grizzly bear
scat.
Black bear droppings are smaller and often contain berries, leaves, and
possibly bits of fur. Grizzly bear droppings tend to contain small bells, bike
parts and smell like pepper.