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Chihuahua Lifespan: How Long Do Chihuahuas Live?

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Chihuahuas hold the prominent position as the smallest dog. They just edge out Yorkshire Terriers. And they have a wide range of fans in the canine world. Maybe you’re one of them. Do you love the round apple-headed chis? Or do you favor the more delicate deer-headed chis? Either way, these little dogs pack a lot of personality into a tiny body. It’s one of their best qualities! And while the chihuahua lifespan reaches the top of the spectrum, it comes with a list of important health concerns. If you adore this tiny breed, you’ll want to keep an eye out and take steps to alleviate problems where possible.

Chihuahuas are small, but they have big personalities

Chihuahua Lifespan

Chihuahuas live an average of 15 to 20 years – when they receive proper care. And females tend to get an extra year or two over males.

Megabyte holds the current (unofficial) record at 20 years and 265 days. He passed away on January 1, 2014, just 100 days shy of 21 years.

That’s a long lifespan, even for a small breed dog! However, the longer a dog lives, the greater the chance for health problems to crop up. And chihuahua’s lifespan and tiny size contribute to a long list of health concerns:

  • Diet problems at both ends of the spectrum:
    • Hypoglycemia
    • Obesity
  • Chihuahuas have ENDLESS dental issues
  • That delicate skeleton presents several problems:
    • Trauma
    • Osteoarthritis
  • Their heads can lead to concerns:
    • Molera
    • Hydrocephalus
  • Chihuahuas frequently develop cardiac disease
  • They have a higher risk for:
    • Bladder stones
    • Infections
The chihuahua lifespan is often influenced by diet

Feeding Your Chihuahua

Everyone loves a chi’s adorable appearance. They fit in your pocket while their personalities fill the entire house. Unhappily, those contradictory traits cause a lot of problems at mealtime. Striking the right balance will keep your chi healthy. It’ll also allow you to enjoy the full extent of that chihuahua lifespan.

The average chihuahua weighs around 2-6 pounds. The miniature size leads people to believe one daily feeding will do the trick. However, chihuahuas require the same regular feedings you’d offer any dog breed. Failure to feed your chi can result in hypoglycemia. Hypoglycemia occurs when your dog’s blood sugar drops too low, And it often happens when they don’t get enough food throughout the day.

You may observe the following signs:

If you see those signs, immediately get to your vet!

If you feed your chihuahua a high-quality dog food 2-3 times each day, though, you won’t have a problem. It’s a simple fix that can help extend your chihuahua’s lifespan.

Of course, chihuahuas are famously picky eaters. This makes passing them some of your food tempting. (Particularly when those big eyes look up at you) NEVER feed your dog table scraps. An overweight or obese chihuahua is a chihuahua with a short lifespan. Obesity increases their risk of diabetes, cardiac disease, and osteoarthritis.

Chihuahuas act tough, but they have delicate skeletons

Skeletons and the Chihuahua Lifespan

The average chihuahua stands 6-9 inches tall. However, the average chihuahua THINKS they’re 6-9 FEET tall. That Napoleon complex is cute, but the attitude poses a risk. Trauma is one of the most significant hazards to the chihuahua lifespan. These small dogs take on dogs, cats, and wildlife, resulting in severe injuries.

Even worse, owners can get forgetful. If you fail to check for your tiny canines, you may accidentally step or sit on them! (It sounds comical, but it happens more often than you think)

Chihuahuas should stay on a leash and harness on their walks. This provides you with better control in an emergency. It also takes the pressure off their trachea. (It’s a two-for-one bonus!) Out in your backyard, never leave your chi on their own (birds of prey WILL snatch a chihuahua without hesitation!).

When you move around the house, check the corners and turn on lights to avoid potential accidents. If you take extra steps to coddle your mini pup, you’ll avoid accidents that could potentially shorten that beautiful chihuahua lifespan.

A long lifespan means osteoarthritis will eventually catch up with your chihuahua. The sooner you start them on a glucosamine supplement to help protect their joint health, the better. Providing steps and ramps to aid with getting on and off the furniture will also help. It takes the pressure off their hips, shoulders, and elbows as they jump on and off the sofa.

The chihuahua lifespan is often impacted by the molera

The Special Case of Chihuahua Skulls

Apple-head chihuahuas, in particular, have molera. The molera is a soft spot on the skull where the bones don’t fully form. This is a natural occurrence that allows the large head to pass through the birth canal. (Mommy chihuahuas appreciate it!) However, as an owner, you want to exercise caution around the molera until your chi is at least six months old. (The hole closes at that point) You DON’T want to injure the delicate tissue beneath! It can lead to complications that definitely impact the chihuahua lifespan.

Chihuahuas are prone to a congenital condition (a condition they’re born with) called hydrocephalus. Spinal fluid builds up within the brain, resulting in a swollen head. Unfortunately, there’s no cure. Most chis die by the age of four months. If you don’t want this to impact your chihuahua, discuss the family history with the breeder. They’ll go over the health of their breeding lines. It’s an important step, and it’ll help you avoid the danger of a puppy mill.

Not-So-Tiny Hearts

Lengthy chihuahua lifespans bring another reality: cardiac disease. Chis can have a congenital condition known as patent ductus arteriosus (PDA). However, it’s more common for chihuahuas to develop age-related cardiac diseases.

  • Mitral Valve Disease: The mitral valve sits on the left side of the heart. As chis age, the valve develops scar tissue and a heart murmur results. The biggest concern of valvular disease is the risk of congestive heart failure.
  • Congestive Heart Failure: Heart failure is a complicated process resulting in fluid in the lungs, abdomen, or both. This is an EMERGENCY. If your chi hasn’t started therapy for their valvular disease, they’ll need to. Medication will prevent their lifespan from getting cut short.
  • Arrhythmias: Advanced stages of heart disease develop arrhythmias or irregular heartbeats. There are medications to help control arrhythmias.

Once your chihuahua receives a diagnosis of cardiac disease, you’ll start a relationship with a Cardiologist. Your chi will need to receive regular visits for follow-up care. This not only helps you get the most of that impressive chihuahua lifespan, but it also ensures a comfortable life for your chi. The Cardiology Team will answer your questions, teach you to count respiratory rates, and give you a phone number to call when you feel nervous. It’s one of the best veterinary relationships you’ll ever develop.

Your Control over the Chihuahua Lifespan

As sad as it sounds, the biggest impacts on the chihuahua lifespan come from owners’ decisions. Because the breed is so small, people often skip routine care such as vaccines and spaying or neutering. As such, up to 10.5% of chihuahuas succumb to preventable infections:

  • Parvovirus
  • Distemper
  • Leptospirosis
  • Rabies

Neutering your male chihuahua not only helps reduce aggressive tendencies (so he doesn’t attempt to take on the Rottweiler down the street). It also reduces his chances of contracting testicular or prostate cancer. Spaying your female chi before her first heat cycle cuts down her risk for uterine and ovarian cancer. (And it might keep her from challenging your grumpy cat)

Routine visits to the vet will keep you on track with your chihuahua’s dental health, too. Chihuahuas are NOTORIOUS for bad teeth. And the longer your chi lives, the worse the situation gets. Tooth decay, tooth loss, and gum disease frequently pop up in chis. Getting your chihuahua in as soon as possible for a thorough dental exam will kick things off right. You may need to face the reality of extractions to remove bad teeth. Not to worry, though – dogs do fine without teeth. Even if there are NO teeth, it won’t impact the chihuahua lifespan. ROTTEN teeth, though? That’s another story.

Long Live the Chi

Your attention contributes to your chihuahua’s lifespan in a big way. Proper diet, brushing their teeth, daily exercise, and keeping up with routine health care maximize that famous chihuahua lifespan. Your tiny little companion will get to stay at your side for a long time to come. These adorable dogs have prominent personalities. And as long as you keep an eye out for them, you’ll get to enjoy every minute.

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Andria Kennedy

Andria Kennedy

Andria grew up in a pet-friendly household. On weekends, the family made trips to zoos and aquariums in the area. So it wasn’t a surprise when she gravitated toward a career with animals.

After six years working among the background operations at the Philadelphia Zoo, she gained a unique insight into the veterinary world. The vet staff provided her first lessons in terminology, the identification of medical equipment, and glimpses of radiographs (x-rays). She also enjoyed plenty of opportunities to talk with everyone, including the veterinary technicians. And they offered an alternative for someone NOT interested in surgical pathways: Namely, their course of study.

Andria enrolled at Harcum College. Philadelphia boasts two programs for vet techs, but only Harcum works with the Ryan Veterinary Hospital and New Bolton Center (University of Pennsylvania’s small and large animal facilities, respectively). Harcum’s vet tech students receive six months of hands-on teaching and experience alongside Penn’s vet students.

With the opportunities and connections available with one of the top veterinary schools, the decision was easy for her to make.

New Bolton Center: Large Animal Medicine
Andria ended up trudging through snow up to the knee and shivering in subzero temperatures during her winter semester, but she wasn’t disappointed with her choice. New Bolton provided a thorough grounding in large animal medicine. A horse-lover as a child, the experience renewed those old emotions.

And a few memories stood out and remained to this day:

  • Standing alongside a Clydesdale and feeling TINY
  • Holding the reins of a horse galloping at top speed on a treadmill
  • Nursing tiny foals through the first days of their life

Ryan Veterinary Hospital: Small Animal Medicine
Veterinary students can legally work at a practice while studying. Andria took advantage of the opportunity, gaining “real life” experience while attending class. It provided a slight advantage when she entered her three months at the small animal hospital.

However, as Ryan Veterinary Hospital offers treatments unique to the veterinary community, she continued to gain valuable experience. For instance, she spent a day working alongside their Chemo Team. The positivity of everyone she encountered – staff, clients, and patients alike – left a lasting impression.

Additional standout moments included:

  • An afternoon spent with the head of the feline kidney transplant program
  • A day serving as the anesthesia technician in their new radiation unit
  • Recognizing a radiograph of a giant elephant shrew (applying her previous zoo knowledge)

Emergency/ICU Veterinary Technician
Accompanying her Associate of Science in Veterinary Technology, Andria received a passing score on the Veterinary Technician National Exam (VTNE). The two led to her certification/license as a veterinary technician – first in Pennsylvania (CVT) and later in Virginia (LVT).

Emergency medicine appealed to her from the beginning. The flux of ailments, injuries, and even species kept her mind sharp at all times. The knowledge required to handle cats, dogs, exotics, and even wildlife is highest in an ICU setting. When a vet tech never knows the patient’s stability coming back to the treatment area, skills and the ability to respond in an instant always stay in peak shape.

With treatments evolving at a constant basis, Andria sought out the best Continuing Education opportunities. She attended the International Veterinary Emergency and Critical Care Society (IVECCS) Conference whenever possible. This allowed her to discuss the latest wound treatments, medications, and advancements in diet formulations.

Cardiology Veterinary Technician
With the increased knowledge and experience, Andria noticed gaps in her abilities. Her grasp of cardiology remained at the basic level. She wanted to boost her skills and understanding as much as possible, improving her patient care. When an opportunity within the practice arose to move into the cardiology department, she accepted.

She sharpened her ability to read ECGs, recognizing arrhythmias of every type. Speaking with the cardiologist, she learned to read echocardiograms, picking out the most common disease processes. And, courtesy of her position in the department, she took in everything she could regarding the grain-free diet concern.

And throughout her ten-year career, she built her store of client interactions. She learned stories of heartbreak and hope. In the middle of the night, she shared touching and humorous conversations. Every moment taught her to engage with people. And the skill blended into her writing ability, capturing the interest of pet-lovers everywhere.

Check out Andria’s LinkedIn here


  1. I love my Chihuahua she lived for 18 years! I have rised two one lived for 17 years the other lived 18 years!!! She was my love of my life !
    I will never stopped the love I have for her! I. Bought her home Buried her with a God’s ring on her leg! I even get flowers for her! She has a cross that is her head stone!!! ????????????❤️❤️❤️

    • Hi Phyllis,
      It is amazing how long they carry on, isn’t it? It sounds like your two little chis had great lives. Thanks for following us here at Bone and Yarn!

  2. i just got my little one abd she definetly keeps me busy shes 5 months old

    • Hi Milly,
      Only 5-months-old – I bet she’s tiny! Those little chis are spunky and full of pep. Glad you two found each other. Thanks so much for your support here on Bone and Yarn, and good luck with your little one!

  3. My chi just died at 13 1/2 years old.She died of heart failure,her sister died in a same way, heart failure,they both have the same hereditary flaws.

    • Patrick, I’m so sorry to hear about your loss. Cardiac disease is definitely present in chis, and something to keep an aye one and watch out for. You’re definitely in our thoughts here at Bone and Yarn.

  4. Just commenting on an issue with the teeth…I have a 2 1/2 year old female…Kendall…I had to take her to vet to get her teeth cleaned…she ended up having her 4 front bottom teeth pulled …they were all loose…I was shocked!

    • Hi Lynn,
      Yeah, it catches a lot of people off-guard. I hope Kendall’s feeling better, though – loose teeth can get so uncomfortable. With luck, now that her vet knows the state of her teeth, they’ll help you stay on top of things. Best of luck, and thanks for chiming in!

  5. We have a 10 year old 2 1/2 pound Chi — a rescue at just 6 weeks old, from an awful, awful situation. She has multiple birth defects, has epilepsy, which requires daily meds to control seizures and neurological issues that caused her blindness at a very young age…and she has had numerous tooth extractions—so her diet is kind of special. She also has vocal issues, so, though she can ‘shriek like a hell-beast’ if she even suspects something may not be to her liking, she can’t-and has never been able to-bark. Not ever.
    But…is she handicapped?
    NOT according to her!! She is always cheer-infused. Sweet. Happy. Loving.
    Although there have been a few dismal and ignoramuses, bankrupt if heat and soul, who have gagged out the toxic comment, ‘she should have been put out of her misery,’ (I held back saying, ‘if being diagnosed as miserable is the only defective criteria for euthanasia, YOU wouldn’t be HERE right now… ) my little Darling is just adored by everyone. Absolutely. And she is thrilled to be friends with everyone. She is as happy as a Spring rainbow and adored by her everyone— and she doesn’t have a single mean bone in her sweet, sweet body. She’s as pretty as a picture— even with her ‘diamond eyes.’ She is absolutely NO trouble st all— not to us—and every day is a joy for having her in it!! She is a blessing. And we are so thankful for the gentle hand of Providence, that gave her to us—
    We are SO lucky to have her… and I can’t begin to tell you how she has taught us SO much about courage, love and joy —and appreciation for the pleasure and gift of life.
    Lucky, lucky, lucky, are we!!!
    So— I often thank her … because She rescued US, after all, didn’t she… ❤️

    • Kate,
      (No problem on the typos – it happens!)
      It’s amazing how those little miracles come along, isn’t it? The best dogs out there come with challenges (or so I think). And I’m a firm believer that our rescues are the ones rescuing us. We gain so much knowledge and compassion from them, and it sounds like she found the perfect home with you. Epilepsy is challenging but manageable, and it sounds like you guys are doing a fantastic job. And teeth? Hey, teeth are overrated. One of my cats had to have ALL of his teeth removed, and while he looks kind of silly when he yawns or hisses, it doesn’t slow him in the slightest. These guys are so resilient. I’m glad she found you. And thank you so much for sharing her story.

  6. Pardon my many typos!!! Lol!!

  7. I rescued Penny, she is a bridle, the color of a penny. She is the ruler of the house. Her brother a silver Schneider is 22 pounds. Penny at 5lbs 4oz runs circles around him. Penny has seizures, not often thank goodness. Our problem is she BARKS, she will drive me crazy. How do I stop the barking? They are both rescued pups. HELP!

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