A Chihuahua outside in a field.

Facts on the Chihuahua Dog Breed

How long do Chihuahuas live? The Chihuahua lifespan is pretty long — as much as 17 years — but they have a tendency to develop health problems like hypoglycemia, joint ailments, eye infections and bronchitis. Also, the tops of their skulls never fully develop, leaving soft spots (“moleras”) that should be protected.