Apparently Bears can do pretty much whatever they want:
Frank got a new hunting rifle as a gift and he was excited to try it. So he went bear hunting. He spotted a small brown bear and shot it. He went over to inspect his trophy. Just then there was then a tap on his shoulder, and he turned round to see a six foot tall black bear looking him in the eye.
The black bear said "Big mistake Frank. You've got two choices. I either maul you to death or we have sex." Frank decided that he would rather live so he bent over. It was terrible. Frank couldnt sit down for two weeks. As soon as he recovered he vowed revenge.
He headed out on another trip. He tracked down the black bear and shot it. Just then there was another tap on his shoulder. This time an eight foot grizzly bear stood looking down at him. The grizzly said "That was a big mistake, Frank. You've got two choices. Either I maul you to death or we'll have rough sex." Again, Frank thought it was better to comply. It was horrible. Although he survived, it took several months before Frank finally recovered.
Outraged he headed back to the woods, managed to track down the grizzly and shot it. He felt sweet revenge, but then there was a tap on his shoulder. He turned round to find a ten foot kodiak bear towering over him.
The kodiak bear said, Frank, admit it. You don't come here for the hunting, do you?"