The scariest thing ever would have to be when Sam and I were going for a jog. I know that Mastiffs aren't supposed to jog, but Sam loves it. So anyway, we are jogging and then all of a sudden, Sam stops. She just stops. I was like, what Sam, are you tired? and she wouldn't move. She sat down and her ears went waaaay up and I knew that she was listening. So all of a sudden she takes off, and she is sniffing in a bush. Then she starts barking really loud. So I was like, Sam, what's wrong? And I try to walk over to her and she stops me by barking REALLY loud. SO then I hear her growl, and then she picks up a knife from behind the bush and drops it at my feet. I put my gloves on, picked it up, put it in a doggie bag and dropped it in the garbage bag. So we continue. When we were exiting the park, we saw a man looking around in the bushes going, "Where is it"? "I thought I put it here...".