What do Chihuahuas usually die from?

Heart disease is the most common cause of death for aging Chihuahuas, followed by lower respiratory tract disorder and traumatic injury. Regular vet check-ups, dental care, and a healthy lifestyle can help manage these risks and ensure their well-being.

Despite their diminutive size, Chihuahuas are fairly sturdy and subject to relatively few major health problems — certainly fewer than may afflict other dog breeds.