Chihuahuas naturally have high metabolisms, which can make them shiver when they get excited or anxious. It also affects their ability to regulate body temperature. When an animal has a high metabolism, he burns off body heat quickly. This means that even when you don't feel cold, your Chihuahua might.

How do I get my Chihuahua to stop shaking?

If your Chihuahua shakes and shivers in the morning, evening or when they go outside, then it's likely a result of them being cold. You can stop this behavior by warming them up and offering some thermal protection against the biting cold temperatures.

Why does my Chihuahua keeps shivering?

Shivering could be a sign that your dog is in pain or suffering from an illness. Shivering and muscle tremors can be symptoms of serious conditions such as distemper, hypoglycemia, Addison's disease and inflammatory brain disease, as well as more common ailments like an upset stomach.