Tremors/shaking dogs - page 1 - petplace., Tremors are rhythmic, to and fro involuntary movements that persist through the waking state. true tremors stop during sleep. there are a variety of causes of tremors. Involuntary muscle trembling dogs | petmd, Tremors in dogs . tremors are involuntary, rhythmic and repetitive muscle movements that alternate between contraction and relaxation, usually involving to-and-fro. Dog panting, shaking, shivering excessively | dog pants, Dog panting and shaking. most dogs are known to shiver or shake when they are feeling cold or they have gotten wet. however certain small breeds of dogs tend to.