In order to protect them,it's important to know why do grizzlies choose certain areas to inhabit in the first place?Let's look at a threatened population of bears living in the rocky mountains of Canada.Remember those giant claws?Well, they're not for what you might think.They have evolved specifically for digging up energy-rich roots.It turns out that grizzlies eat a lot of plants.The ones that live here are almost vegetarians.