Healthy dogs shake their heads during routine hygiene practices, such as shaking off water, parasites and debris. Dogs also shake their heads in response to the discomfort or pain associated with an illness or injury. More »

In most cultures, a slow and lengthy up-and-down nod signifies agreement and understanding, while small nods signify approval or encouragement. A rapid and fast nod depicts impatience. Shaking of the head from left to ri... More » World View Symbolism

In individuals with sinusitis, shaking the head can cause a sinus headache to become more painful and noticeable, explains The Asthma Center Education and Research Fund. Focal head pain can also result from vigorous shak... More »

According to WebMD, compulsive tail biting in dogs can occur for a variety of reasons, including allergies, anxiety, dry skin, epileptic seizures, injury and parasites. There are also certain dog breeds that have genetic... More » Pets & Animals Pets Dogs

No one is entirely sure why dogs tilt their heads, but the leading theory is that it allows them to see or hear better. Some dogs learn to do it more often because the behavior is rewarded with attention from their owner... More » Pets & Animals Pets Dogs

Advantage Multi is a flea preventative medicine that also helps to prevent heartworm infection and kills intestinal parasites. It is given to dogs once a month, just like traditional Advantage medication. More » Pets & Animals Pets Dogs

Various reasons, such as hormonal imbalance, pesky parasites, skin problems and hormonal imbalance cause dogs to chew their tails. Calm and trained dogs who have never showed interest in their tails before may have skin-... More » Pets & Animals Pets Dogs