Hyper dogs can sometimes be aggressive, and more often than not, they tend to unintentionally hurt people even if all they wanted was to play because of their violent reaction. 1. Understand your dog's needs. Observe to determine what triggers your dog's excitable behavior. Some dogs may want to go outside, seek your attention, desire to play with another dog, or simply be hungry. Once you identify the reason for their energetic outburst, it becomes easier to calm your dog. 2