Dog Brings A Giant Knife Into Owner's Bed

Has your dog ever brought you a "present"  Maybe it was something they killed in the yard, or their favorite slobber soaked ball.  This dog does it in a way that makes you think the dog is some sort of serial killer from the movies.  This would be a terrifying and a confusing way to wake up.  Some lady posted a video of her dog climbing into bed with her in the middle of the night, with a large CHEF'S KNIFE in its mouth.  Lot's of questions here.  HOW DID THE DOG GET THE KNIFE?  How many times has he done this? Where did he learn this behavior?  And the dog does not want to let the knife go.  We are glad the lady is laughing through this, because we think this dog was about to off her for the insurance money!