There were vast herds of buffalo in the neighborhood; Clark estimated he could see ten thousand in one view. The bulls kept Seaman up all night, barking at them. Grizzlies were also numerous, and, unlike the buffalo, they were dangerous; Lewis forbade any man to go alone on any errand that required passing through brush, and ordered all hands to sleep with their rifles close at hand. The bears came close around camp at night, Lewis wrote on June 28, “but have never yet ventured to attack us and our dog gives us timely notice of their visits, he keeps constantly padroling all night.”
