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Dogs often shake if they are cold or wet, notes Dog Symptoms Cure. Smaller dog breeds are also known for shaking. It can be a serious problem if the dog shakes for an extended period of time, in which case a veterinarian should be consulted.


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.


According to Central Houston Animal Hospital, shaking and vomiting in dogs often signifies acute abdominal pain. Acute abdominal pain is caused by a variety of factors that include viral or bacterial infections, pancreatitis and gallbladder rupture. It is extremely impo...


A dog's leg may shake because of nerve responses, according to MentalFloss.com. This is known as the "scratch reflex," occurring when an owner playfully rubs a dog's belly. The nerves register the touch as irritation, sparking an involuntary movement of the legs. It is ...


Dogs can get sick from humans. This concept, called reverse zoonosis, is being studied by veterinary researchers at Oregon State University and Iowa State University.


The most common signs of illness in dogs are behavior changes, change in eating or drinking habits, fever, vomiting and diarrhea. Appearance changes can also signal illness.


If a dog is consistently shaking its head back and forth, then the dog most likely has a type of ear infection from bacteria, yeast or other allergens, such as ear mites, notes WebMD. If the shaking is violent, then the dog may end up breaking blood vessels in its ears,...