I have often wondered what does a grizzly do when he overturns a rock or a piece of tree to discover a big rattlesnake, which are not uncommon in Montana and Wyoming. I'm sure that there is an age-old relationship between the two. In the American lower 48, there were once a grizzly population of roughly 100,000 bears; living in prime rattlesnake country. So, my question is, do grizzly bears avoid the poisonous snakes or do they eat them? I have yet to read a single article on this subject nor have I witnessed such an encounter on the many documentaries that I have viewed.