Why Do Chihuahuas Shiver So Much. It could also be by a medical issue like generalized tremor syndrome (gts). Chihuahuas naturally have high metabolisms, which can make them shiver when they get excited or anxious.
Chihuahuas naturally have high metabolisms, which can make them shiver when they get excited or anxious. They shake and shiver a lot after they’ve just had their meal, using up all the fuel they just stocked up on. Your chihuahua may be shivering because he is cold.