My B is pretty much fearless. He loves playing with the vacuum, he doesn't flinch if you play chase and run at him. He also loves being around when I use the hairdryer. Anyway, my friend brought a helium filled balloon to my apartment for my birthday. I put it in the corner and the dog didn't notice it all night but as soon as it started drifting around the living room he took notice. He wouldn't go near it and if I touched it he would take off and hide in my bedroom. I wanted to see if he was really frightened or if he was just not use to it so I had him sit down next it and I had him touch it and smell it to see that it would not harm him. He was not a fan! I clipped it on his collar for about 10 seconds and he went tearing around the living room trying to run away from it. I couldn't stop laughing! I found out that my b is not so fearless. I didn't think a balloon could cause that much terror!