August 1, 2013 2:42 pm Raw Video: Bears Frolic When No One Is Looking A remote camera in a Canadian park captured bears rubbing a tree, which wildlife experts say is a way of communicating with other animals. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 25:57 WATCH: ‘Changing Climate' highlights the Philly-area residents who are combatting climate change