- Posted July 25, 2013 by
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Ahhhh... That Feels Good!
Why black bears scratch up against trees is a subject of discussion among experts. While some say the scratching is a popular summer pasttime to get rid of parasites or loosen the bears' thick winter coats, others believe the bears are scratching to mark the trees with scent to communicate with each other during mating.
- hhanks, CNN iReport producer