Unexpectedly, life tables varied widely between breeds. Jack Russell Terriers had the highest life expectancy at birth (12.72 years), followed by Yorkshire Terriers (12.54 years), Border Collies (12.10 years), and Springer Spaniels (11.92 years).
The aging profile of dogs varies according to their adult size (often determined by their breed): smaller dogs often live over 15–16 years (the max is 20 years), medium and large size dogs typically 10 to 20 years, and some giant dog breeds such as mastiffs, often only 7 to 8 years.
The oldest dog living is Gino Wolf (USA, b. 24 September 2000), who is 22 years 52 days as verified in Los Angeles, California, USA, on 15 November 2022. Gino was adopted by Alex Wolf in Boulder, Colorado, in 2002.
Well, dogs are in possession of faster metabolisms and hearts that work harder than our own. Because of all this extra work, dogs age faster and, consequently, live shorter lives. It also means they grow up more quickly. A dog that's a year old is the equivalent of a human child ready to start school.
Dogs, in fact, have been known to live over the age of 20 (140 human years), and the oldest dog on record was 29 (or 203 human years).
As a general guideline, though, the American Veterinary Medical Association breaks it down like this: 15 human years equals the first year of a medium-sized dog's life. Year two for a dog equals about nine years for a human. And after that, each human year would be approximately five years for a dog.
Dogs being a smaller size than the average human adult means that they have a shorter lifespan than we do.
A 13- to 15-year-old dog, depending on her size and health, is roughly equivalent to a 70- to 115-year-old person. In her elder years, it is harder for your dog to learn new things. In fact, she likely will be resistant to changes in her surroundings and routine.
World's 'oldest dog' dies at 30 in Australia after going to sleep in her basket. Maggie, who was thought to be the world's oldest dog, has died in Australia aged 30 - or 133 in human years. The Kelpie was owned by Victoria dairy farmer Brian McLaren.
1. Border collie. According to The Intelligence of Dogs, which ranks 131 dog breeds in terms of their relative intelligence, the border collie is the smartest dog breed known to man.
What Do Dogs Dream About? While no one knows for sure what your dog dreams about, researchers think they likely dream about dog things like chasing squirrels, running after rabbits, and playing fetch with you. But while dogs dream happy dreams about fun activities, they can also have bad dreams or nightmares.
The best way to determine the age of a puppy is by looking at their teeth. All of a puppy's baby teeth should erupt between 3 and 6 weeks of age and their adult teeth should appear between 12 and 16 weeks of age at the front of the mouth and between 16 and 24 weeks toward the back.
Using the simple 7:1 ratio, this same 10-year old dog would be the equivalent of a 70-year old human. All of these calculations are based on the assumption that the average human life expectancy in developed countries is 80 years. The average life span globally is only 66 years.