If you've seen the Herzog documentary Grizzly Man, then you're already familiar with the batshit insane Treadwell, who considered himself the Grizzlies' caretaker, while the bears were probably wondering why they were being stalked by a crazy, yellow-haired, effeminate freak.
The lesson to be learned here is that bears do not want to be your friend, despite some rare exceptions like Smokey the Bear, Winnie the Pooh, or William "The Refrigerator" Perry.
Oh, and for some more of Treadwell's antics, here he is repeatedly kissing a seal, which I can only assume also wanted to kill and eat him:
Timothy Treadwell (1957 - 2003)