Chihuahua Health Guide — What Every Owner Needs to Know
June 19, 2026 · 9 min read
Chihuahuas are the longest-living dog breed, often reaching 15–20 years. But they have specific health vulnerabilities. Here's everything you need to know to keep your Chihuahua healthy.
Chihuahuas are the longest-lived dog breed — many reach 15–20 years with proper care. Their tiny size means they're fragile in some ways, but their genetics are remarkably robust. Understanding their specific health vulnerabilities helps you give your Chihuahua the best possible life.
Most Common Chihuahua Health Issues
Dental disease: The #1 health issue for Chihuahuas. Their small mouths have crowded teeth that accumulate tartar rapidly. Without daily brushing and regular professional cleanings, dental disease leads to tooth loss and systemic infections by age 5.
Patellar luxation: The kneecap slips out of place, causing a characteristic "skip" in their gait. Mild cases are managed with supplements; severe cases require surgery.
Hydrocephalus: "Water on the brain" is more common in Chihuahuas than other breeds, particularly those with very domed skulls. Signs include an unusually large head, seizures, and behavioral changes.
Essential Health Products for Chihuahuas
FAQ
How long do Chihuahuas live?
Chihuahuas are the longest-lived dog breed, typically living 15–20 years with proper care. Many Chihuahuas are still active and healthy at 18.
Are Chihuahuas fragile?
Yes — their small bones break easily from falls or rough handling. They should not be allowed to jump from high furniture, and young children should be supervised carefully around them.
Why does my Chihuahua shiver?
Chihuahuas shiver for two reasons: they get cold easily (they have very little body fat and a fast metabolism), and they shiver when excited or anxious. A sweater helps with cold; training helps with anxiety.
Do Chihuahuas need dental cleanings?
Yes — professional dental cleanings every 1–2 years are essential for Chihuahuas. Combined with daily brushing at home, this prevents the severe dental disease that affects most Chihuahuas without care.
Can Chihuahuas live with other dogs?
Chihuahuas can live with other dogs but are safest with other small breeds. Large dogs can accidentally injure them during play. Chihuahuas often prefer the company of other Chihuahuas.