My dog (small breed) gets extremely scared from two noises from TV. The sound of a doorbell and the sound of an iphone alert. I mean, he literally shakes, uncontrollably, tucks his tail, etc… He usually runs off the bed, out the doggy door & into his dog house! For example, I was watching Golden Girls & the doorbell rang (on the show). He instantly got up and started to run off the bed. I stopped him and held him in my arms… He was shaking terribly! He eventually snuck out of my arms and burried himself under my pillow… But I don't understand why those two noises strike such fear in him & what can I do to help him when he does that?