Low and slow: A low-pitched voice means authority

Low pitched commands mean business, perhaps because they are reminiscent of a mother dog’s low growling admonishments. By using a low-pitched voice in a command you’ll get a better result because it comes across that you are confident and serious about what you’re asking.

Courtesy of RadioFence.com, a Leading Internet Retailer of Pet Supplies including Pet Doors, Bark Collars and Dog Training Shock Collars.