Chihuahua Lifespan: Average Life Expectancy of The Chihuahua

Healthy adult Chihuahuas live an average of 15 to 20 years.

Healthy adult Chihuahuas live an average of 15 to 20 years.

As with any breed, a Chihuahua's lifespan varies depending on a number of different factors (see below for a complete list). Some of these factors are controllable, whereas others are outside of owners' control. Owners should familiarize themselves with these factors so they give their Chihuahua the longest, fullest life possible.

There's no fool-proof method for predicting exactly how long they can live, but current data suggests that Chihuahuas live an average of 15 to 20 years when properly cared for by a loving owner.

Small breeds like the Chihuahua and Yorkshire Terrier live longer than medium-to-large breeds like the Labrador Retriever and Mastiff. Medium-to-large breeds have an average life expectancy of 10 to 13 years.

Does this mean all Chihuahuas live between 15 and 20 years? Not necessarily, but this is a good rule of thumb to follow.

Factors That Impact a Chihuahua's Lifespan:

  • Diet - a Chihuahua's diet will directly impact their lifespan. Owners should feed their furry four-legged friends a nutritious, well-balanced premium dog food with no fillers, preservatives or artificial flavors. Avoid the temptation of feeding your Chihuahua leftover dinner scraps, as this can lead to obesity, toxicosis and other health problems.
  • Weight - equally as influential in a Chihuahua's lifespan is weight. Obese Chihuahuas are prone to a variety of adverse health conditions which may lower their average lifespan, including diabetes and cardiovascular disease. Underweight Chis may also experience a lower average lifespan due to malnutrition and a weakened immune system.
  • Healthcare - it should come as no surprise that healthcare plays a role in a Chihuahua's lifespan as well. Taking them to the veterinarian for routine checkups will promote a long, healthy life by diagnosing illnesses early, before they progress to life-threatening ailments. Most veterinarians recommend taking adult Chihuahuas between the ages of 7 and 10 for a wellness check once a year. If you have senior Chihuahua over the age of 10, however, you should take them for a wellness check twice a year.
  • Genetics - "good genes" can lengthen a Chihuahuas lifespan, which is why it's important to pay close attention to a pup's parents if you're looking to adopt. If the parents are healthy, energetic and happy, their pups are more likely to live a long and healthy life.
  • Spaying/neutering - Chihuahuas that are spayed and neutered tend to live longer than those that aren't fixed. Neutering a male Chi before the age of year will decrease their risk of developing testicular and prostate cancers, and fixing female Chis before their first heat cycle can reduce their risk of developing uterine and ovarian cancers. Of course there are other health benefits associated with spaying and neutering a Chihuahua, such as lowered aggression levels, reduced risk of running away, and fewer pups ending up in the pound.
  • Vaccinations - Chihuahuas require vaccinations and follow-up booster shots to protect against potentially life-threatening disease like the parvovirusLeptospirosis, Bordetella bronchiseptica (kenel cough), canine influenza, distemper and rabies.
  • Oral Care - like most small breeds, Chihuahuas are prone to dental problems like tooth decay, tooth toss and gum disease. Some studies suggest that as many as 9 out of 10 Chihuahuas will experience dental problems. Allowing your Chihuahua to suffer from poor oral health can reduce their lifespan. Bacteria enters the bloodstream through bleeding gums (caused by gingivitis) and goes straight to the heart and kidneys.
  • Gender - statistically speaking, females live longer than their male counterparts. The exact cause of this longer average lifespan is unknown, but studies suggest female Chihuahuas live 1 to 2 years longer than males.
  • Activity Levels - keeping your Chihuahua active is crucial to promoting a long, healthy life. Whether it's playing fetch, tug-of-war (with a toy, of course), or going for a walk around the neighbor, give your Chi plenty of daily exercise. Doing so will burn excess fat, build muscle, strengthen their immune system and ward off illness, of which impact their average lifespan.

The World's Oldest Chihuahua

The world's oldest Chihuahua on record (keyword being on record) is Megabyte, who passed away on January 1, 2014 at the age of 20 years and 265 days. Other than the occasional news article and blog posts, details are scare about Megabyte's life; however, we know this full-bred Chihuahua lived 20 full years before passing away on New Year's Day, 2014.

There have been several reports of Chihuahuas living to 20, 21 and even 22 years of age. These reports were never verified, and thus Megabyte retains his title as the world's oldest Chihuahua.

Chihuahua Age In Human Years and Dog Years

Age In Human Years Age In Dog Years
1 15
2 21
3 25
4 29
5 33
6 37
7 41
8 45
9 49
10 53
11 57
12 61
13 65
14 69
15 73
16 77
17 81
18 85
19 89
20 93
21 97
22 101
23 105
24 109
25 113

*this chart can be used for all dogs under 20 pounds.


152 Responses to “Chihuahua Lifespan: Average Life Expectancy of The Chihuahua”

  1. Noah says:

    I have a lovely, healthy, beautiful long haired chihuahua hula who is 13 years old ! He is my baby boy and I love him so much ! He only has about 2 teeth but that’s because they were pulled by a vet a few years ago cause they were no good, he is completely good and healthy though and is predicted to have many more years ! He is healthy, beautiful coat, playful, active and eats like a king ! I hope everyone’s chis are good !!! <3

  2. Holly says:

    I have a adorable female Chihuahua which adopted about six months ago. She is an older dog with an eye disease where her immune system has caused he eyes to no longer produce tears.
    She has to be given three expensive types of eye medications three times a day to keep her from going blind.
    Therefore, she is an older, disabled, expensive, high-maintenance dog and I love her to pieces. I am not rich but I have an account which is just for her medical costs. She is worth every cent and is an adorable snuggle bug who is devoted to me and follows me all around the house
    The point is, I knew th expense and the high-maintenance going into this adoption. I saw her photo on the rescue website and I fell in love with her and with the description of her personality as given by her foster mother.. Her foster mother was so glad that she found someone to adopt her who would take good care of her.
    Reading some of the comments on this website, I have become alarmed at the people who have dogs who cannot afford to have them spayed, who don’t know how to administer medicine to them, who put them in the freezer, etc. It makes me want to cry because dogs are so vulnerable and loving and depend on us to take care of them.
    But I am encouraged by the people who love and take care of their dogs into old age.

    Please don’t adopt a dog if you cannot afford to have them spayed, which also means you probably cannot take them to the Vet regularly for vaccinations, or yearly check-ups, or pay for any serious illness or condition which they may develop. That’s the facts of life and dogs, like children, need responsible parents.

  3. Adele white says:

    Hi my chauiauwa is 17 blind deaf but still loves to eat and. Love her so much she has such a big heart still very determined

  4. Ryley says:

    My chihuahua mix is 10 poor boy has had a hard life he has only one eye(he got a cat scratch from our friends cat and it got infected when we took him to the pot holes on our island)
    He also had a few teeth removed one recently almost killed him
    Seriously i hope he lasts at least another 3 years but the other people are insane keeping a blind and deaf dog is horrible….
    If my boy goes any further and something big happens yeah i will put him down but only because it is the best for him not me i saw acceptance in his eyes when he looked like a dead dog(a month or so ago this happened) and i mean come on people accepting death is part of life…..i did accept my dog was going to die but he came home! I am happy i didn’t put him down but you got to also realize you aren’t in control of this stuff
    I just find people to be cruel when trying to be gods or trying to control fate
    It is what it is

    I am just glad everything is back to normal and Jake(My chihuahua mix) is alive…..

  5. Pablo Rodriguez says:

    I own the world’s oldest Chihuahua. He is 23 years old.

  6. Tina says:

    Thank you everyone for sharing your stories. I rescued an elderly Chi in February that was dying in the middle of the road. He was malnourished, had severe flea bite dermatitis and resistant infections. Upon xrays, he has an old broken nose, jaw, tail and injured spine. He has a chip that says he is 11, but the vets originally thought he was around 17 and at the end of life. Well…with alot of love and nutritional support, this little guy has made a full recovery, with exception to chronic sinus issues, and is running around like a spring chicken. He is so happy and full of love. I am so lucky to have found him and I am hoping to have him around for a very long time. It is my first time owning a Chi and this little breed is such a delight!❤

  7. Ian says:

    We have a 21 year old Chihuahua in December 26th

    • Tanja says:

      That’s amazing my lil girl just turned 14
      I’d give anything to have her another Seven years

    • Holly says:

      To Tina, who rescued the Chi who was near death. Bless your heart. That makes me so happy to hear stories like that. You are a guardian angel to that little one. Your story reminds me of my adoption of my Chi, but not so amazing. I really think that they know that we have rescued them and they are grateful and return our love to us.

  8. Kat says:

    I have a Mexican hairless chihuahua. His name is chillie and he will be 20 in May of 2018. Chillie is blind and deaf but he still gets around. I give him cut tiny tiny pieces of apples,cooked carrots, and he loves it. He sleeps a lot but he still with us. Chillie sister xena was 18 when she died. We miss her so much. My dogs are not outdoor dogs at night or do they run at a dog park. There very spoiled . They get Walks everyday and Vet checks. Just one thing for all chihuahua owners. Love them and keep them safe. I live coyote country and it’s not safe. Good luck.

  9. says:

    We have an amazing chihuahua mix she’s around 21 y/o my bf saved her in 97 from being hit by a car…
    We don’t know her exact age but we know that our love for her is definitely one of the things keeping her strong….
    She is amazing and love her to bits.

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