Top Longest Living Dog Breeds in the World

Updated on December 7, 2022

Almost. 20-year-old dogs are very rare, but they’re not completely out of the question.

Do Dogs Have A 20-Year Lifespan?

Almost. Although dogs living to be 20 years old are extremely uncommon, it is not impossible. The average life expectancy of the world’s longest-lived dog breeds is mostly determined by their genes. Then there are additional aspects over which dog owners have influence. The Yorkshire Terrier, the Australian Shepherd, and the Chihuahua are the three most common dog breeds that can live to be almost twenty years old.

If given the best possible care, any one of these three can live to be over seventeen years old and avoid the usual causes of canine mortality including heart disease and cancer.

For how long have we known which dog breed has the longest lifespan?

The Chihuahua is the longest-living canine breed, according to experts. To the contrary, Chihuahuas often live to be 15 years old.

Megabyte, a Chihuahua, is believed to be the oldest living Chihuahua. Megabyte lived for 20 years and 265 days before passing away. Bluey, an Australian Cattle Canine, is another extreme example of the longest-living dog breed.

Bluey is the longest living dog who passed at the extremely ripe age of 29 years and five months, barely seven months shy of 30 years on the planet. Bluey lived to be 159 years old, as measured in dog years. On the other side, Megabyte the Chihuahua reached the ripe old age of 114 (in dog years). These two dogs are living proof that dogs can live incredibly long lives. To be fair, though, these canines aren’t your standard breed.

Are there any studies that show whether or not dogs of mixed breeds have a longer lifespan?

Simply said, the average lifetime of a hybrid or mixed breed dog is higher than that of an inbred dog. There is a significant risk that recessive genes and health abnormalities will unexpectedly emerge in the next generation of puppies as a result of same-breed breeding operations. When breeds are mixed, the chances of bringing out recessive features or abnormalities are greatly reduced.

This is the evil side of the purebred dog market, where it is inescapable to breed dogs from the same bloodline and breed. And this is also why we don’t constantly prattle on the merits of obtaining a purebred dog because purebreds are likely to possess genetic or inborn problems that would contribute to the shortening of the lifespan of the dog.

Other variables affect the longevity of dogs, too. Taking care of things is the first crucial step. Your dog’s everyday lifestyle and diet are important aspects of its care. As a dog ages, the need for proper diet and physical activity becomes urgent and important to the dog’s health.

Rapid decline in older dogs is inevitable; slowing it down requires prioritising the dog’s comfort and happiness. As an additional measure to improve your dog’s quality of life, we suggest taking it in for regular checkups at the vet. Many dog owners have the habit of putting off taking their pets to the vet until something is seriously wrong. And by then, it could be too late.

The second aspect that determines the longevity of dogs is their size. Scientifically speaking, the larger dog breeds have shorter lifespans. For example, Great Danes only live for roughly seven years before they begin exhibiting chronic ailments. The Irish Wolfhound, which measures in at a hefty 115 pounds in adulthood, tends to live for only seven years. Compare the lifespan of much smaller canines like the Jack Russel Terrier, and you can expect double the human years. The Jack Russel Terrier weighs only 15 pounds in adulthood.

What about getting your dog neutered or spayed?


There’s some extremely positive news concerning dog owners who have their canines repaired early. It appears that getting your dog sterilised will readily add years of life to your pet. Get your tiny dog neutered by the time it’s five months old, ideally earlier.

If you have a big breed as a pet (or numerous large dogs), the objective for neutering and spaying would be about twelve months to fifteen months. Fixing a dog at a young age has long-term health benefits.

But why does mending your dog prolong its life?

According to the scientific literature, fixing decreases the likelihood that a dog may develop some types of cancer. The testicles, mammary glands, and ovaries of dogs are all potential sites for cancer development. In spite of the fact that there is a greater volume of anecdotal evidence.

The 20 Dog Breeds With The Longest Lifespans

What are the longest-lived dog breeds?

It’s been determined that the following dog breeds have the longest lifespans in the world:

New Guinea Singing Dog
Pug Chihuahua Poodle
Canine breed known as a Jack Russel Terrier
Tibetan Apso
A Shih Tzu
A hybrid of the Australian Shepherd and the Cattle Dog
Beagle \sMaltese
Small dog bred in Yorkshire
Shiba Inu \sPug
Miniature Schnauzer
Welch Kölbi
Pembroke Welsh Corgi
Siberian Husky
Shorthaired Pointer
If we look attentively at this list of dogs with the best longevity, you will see that nearly all of them originate from little or toy dog breeds. As we discussed before, it has been shown that the size of the dog has a lot to do with their lifetime. For example, the Yorkshire Terrier is one of the tiniest dogs extant, but it has double the normal lifetime. A Yorkshire Terrier can persist for up to 16 human years. This breed was initially bred for hunting rats and mice. Today, it’s a well-pampered toy dog, which may account for its long life.

The Maltese, on the other hand, has been a treasured home friend for over 28 decades. The ancient Egyptians weren’t the first to keep this kind. The Maltese are exceptionally kind for a dog, and it has also been gifted by nature with an incredible lifetime. Maltese dogs can live up to eighteen years.

Leave a Comment