There is a bison kill in the Lamar Valley and the various residents have been taking advantage of the food source. Barb noticed a Bear swimming across the Lamar river. It turned out to be a boar Grizzly chasing a sow with two yearling cubs. The boar would kill the cubs if he caught her but he finally gave up to go check out the kill. Then momma bear was escorted out of the area by three wolves who would rather have the kill to themselves. The cubs did a good job of attacking the wolves and trying to defend themselves. Wolves can kill bear cubs. The wolves harassed the three bears until mom made it to the river and they swam across. Then they ran away fast when the wolves stopped at the river.