Bear Watching - Grizzly Bear 610

Grizzly Bear 610, one of Grand Teton National Park’s most famous grizzly bears, recently separated from her three male cubs.  This separation is natural for grizzly bears, which are weaned around June of their third year.  Young boars set out to stake out their own territory, while young sows may stay near their mother for another year and share her home territory.  


Grizzly 610 has been preparing them for life on their own by taking the cubs on big looping tours of the parks, and two days before they separated she took them on one last trip hunting for food.  Grizzly 610’s mother, 399, did the same with her when she was a cub.  610 and her cubs have been spotted roaming apart from each other, but in the same area, since the split.

Wonderful video of Grizzly Bear 610 Spring 2013


In July of 2011, Grizzly photographers saw that the 2 grizzly bears, 610 and her mother 399, exchanged cubs, which had been tagged with different color ear tags and made the swap easily noticeable.  The swap is a rare occurrence but most likely takes place when a disturbing incident, such as an encounter with another bear, scatters the cubs and another mother steps in to take care of them.  It is believed that 399 had an altercation with a male grizzly and her daughter, 610, was able to better care for the cub because of her younger age.  

The bears are very comfortable in the area near the park roads, which allows tourists to see them and has made them so popular.  Tourists and locals will continue to enjoy watching and keeping up with these beautiful bears.