Why Do Chihuahuas Shiver

They tremble and shiver constantly. What is amiss with Chihuahuas that do this? In most cases, there is absolutely nothing wrong with Chihuahuas that tremble and shake. There is, however, a reason for it.
Chihuahuas may shake due to the abundance of energy that they have. Have you ever had too much caffeine? Did it make you shaky or nervous? If so, you can imagine what your Chihuahua is feeling when he is shaking for this reason. He simply needs to burn off that excess energy.
Chihuahuas also may shake and shiver when they are excited. This also goes back to the amount of energy they have, but many dogs shake when they get excited…just as many people do. This is nothing to be alarmed about, and the shaking will often either simmer down or stop altogether once the excitement has passed.