For the past 15 years researchers have studied bear rubbing trees in seven different national parks. Through the use of remote cameras and intensive field tracking, Carnivore Biologist Cam McTavish and his research team discovered many animals leave signs and/or notes for other animals at these
very special communication trees. Preliminary information suggests these sites may act as “Tree Mail,” where one animal can potentially determine the sex, species, breeding conditions, etc. of another. 

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