Answer:
Basically, if grizzly bears are on the hunt, their prey can include fish (especially salmon), rodents like ground squirrels, carrion, and hoofed animals like moose, elk, caribou, and deer. They are especially good at catching the young of these hoofed species. Perhaps, Grizzly bears sometimes vocalize when agitated or nervous. These sounds of huffing, jaw-popping (heard at :35 and :57 seconds in), and low growls are warnings that you're too close.
Step-by-step explanation: