Dog Shaking With His Head

It seems that science is at last trying to catch up with how the domestic dog performs many tasks. The latest research into the dogs method of shaking water from their coats shows that as they have evolved to do so with the highest efficiency possible.
The core reason behind this vital action is to remove excess water from their coats so they do not get hypothermia. Scientists calculated that without devising the shaking behavior to remove the water that up to 25 percent of an animals daily calories would be required to heat their bodies. In lean times this excess energy burn would potentially lead dogs to starving to death.
The studies also show that shake speed varies depending on dog size and skin looseness.