3 Cute Puppies Relax Dog AromatherapyIs Your Usually Confident Dog Terrified by Thunder? Afraid of Fireworks? Anxious When Alone? Just like humans have fear triggers such as snakes, public speaking, heights, and the #1 trigger SPIDERS, so do our dogs. For dogs, who live in the moment, the big triggers are thunderstorms, fireworks, and being alone. These make sense, as dogs don't know if the fireworks or thunder will EVER stop. When we leave they don't know if we will EVER come back.