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Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
While happy shaking isnât necessarily a problem, some dogs do get overly hyper. In those instances, you might want to consider behavioral training methods that teach dogs how to reign in their excitement. 2. Stress-induced trembling. Far from your petâs silly shaking is the near heartbreaking trembling of a dog thatâs experiencing severe anxiety.