I found out the hard way that Mitzie is terrified of helium balloons. I got them for my husband for Valentine's Day. I didn't know where to hide them, and decided to just give them to him. So on the way into our apartment building, I tied them to the dogs' collars. Everything was going fine, until one of them touched her. She flipped out! It chased her up 3 flights of stairs, she couldn't get away from it, and I couldn't get her to sit still long enough for me to untie it. I let them into our apartment and went to the kitchen to get scissors, and I found her shaking, under our bed. My poor baby, I feel horrible!