Fireworks are likely the most common loud noises that scare dogs. Why is this? Likely because fireworks are really loud and their sounds are random and unpredictable.
Gun shots are very loud to human ears, which is why hearing protection is recommended at a shooting range. For dogs, who hear things at higher intensity, gun shots are extremely bothersome.
Dogs probably hate the sounds of these vehicles because they are loud but they also create a variety of high pitched noises such as beeping and screeching.
Some dogs cower when pet parents go to clean their carpets. Vacuum cleaners are really loud but they also move around your dog’s territory, likely adding to the fear they cause.
Skateboards can frighten dogs not only because they are loud but because they make erratic noises as they pass over bumps and as the skateboarder performs jumps and other tricks.
Jack hammers thwacking, tractors beeping as they move in reverse and hammers banging away make construction zones especially scary for dogs with noise phobias.
Car alarms are so loud that they often cause windows and door frames to rattle and may rattle your pup into a frenzy as well.
If you live close to an airport you may notice that your dog behaves fearfully every time a plane flies overhead. This may be especially true if your dog was in a rural area as a puppy and never conditioned to hearing this loud scary noise.
Certain noises may have the opposite effect on dogs and may help to calm or soothe them when scary noises are going on around them.