classical music may calm your dog (heavy metal may stress him out)
heavy metal dog vest available at Etsy
"...Lead author Lori Kogan of Colorado State University found that Mozart, Beethoven and the like may reduce stress in dogs, according to a study in the Journal of Veterinary Behavior. The study found that classical music was more soothing than "psychoacoustic" music or specially-made Pet CDs that were designed to calm animals.
Kogan said the study may be helpful for the welfare of animals in stressful shelter environments...
...Classical music was linked to more relaxed and restful behavior, while heavy metal was linked to greater anxiety and unrest." [CBS]
Stressed out dog video below...