Why do Chihuahuas shiver or shake?

Chihuahuas are known to shiver or shake.  Shaking is so common in chihuahuas, that often people take it as a chihuahua breed characteristic.  Sometimes the shaking, shivering or trembling make owners so worried, they think there is something wrong with their chihuahua.  However, there’s nothing to be worried about.  It’s actually a common behavior in chihuahuas.  Not all Chihuahuas shake, but there are reasons for the ones that do.  Check out the video for what they might be!

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