Cardiac arrest is the sudden loss of heart function, and it is a leading cause of death in Chihuahuas. Chihuahuas are especially prone to cardiac arrest because they have small hearts and a fast heart rate.
Aortic stenosis
Aortic stenosis is a narrowing of the aortic valve, which can lead to heart failure. Aortic stenosis is often seen in older Chihuahuas.
Dilated cardiomyopathy
Dilated cardiomyopathy is a condition in which the heart muscle becomes enlarged and weakened. Dilated cardiomyopathy is often seen in young Chihuahuas.
Gastrointestinal torsion
Gastrointestinal torsion, or bloat, is a condition in which the stomach twists on itself, cutting off the blood supply. Bloat is a life-threatening condition and requires emergency surgery.
Hypoglycemia
Hypoglycemia, or low blood sugar, can occur in Chihuahuas who do not eat regularly or who have a history of diabetes. Hypoglycemia can cause seizures, coma, and death.
Traumatic injury
Chihuahuas are small and fragile, and they can easily be injured by falls or being stepped on. Traumatic injuries can lead to internal bleeding, shock, and death.
Poisoning
Chihuahuas can be poisoned by a variety of substances, including household cleaners, pesticides, and medications. Poisoning can cause a variety of symptoms, including vomiting, diarrhea, seizures, and death.
Heatstroke
Heatstroke occurs when a Chihuahua's body temperature rises too high. Heatstroke can cause organ damage and death.
Respiratory problems
Chihuahuas with respiratory problems, such as bronchitis or pneumonia, can go into respiratory distress and die.
Sepsis
Sepsis is a life-threatening condition that occurs when the body's immune system overreacts to an infection. Sepsis can be caused by a variety of infections, including pneumonia, urinary tract infections, and skin infections.