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  • Now for some fast facts: The longest-living person was a woman who made it 122 years and

  • 164 days.

  • Which isn’t bad for a species with an average lifespan of 72 years.

  • There was also a cat that set the record for the feline community by living to 38 years.

  • Yet dogs aren’t so lucky, which means we humans, whove dubbed these loveably goofy

  • creatures as our best friends, really feel the sting.

  • A 13-year-old person has their whole life ahead of them, yet a 13-year-old dog is considered

  • a senior at that age!

  • While we humans take up to 18 years to stop growing and developing, a dog is usually full

  • grown at 18 MONTHS!

  • Canines do have their own record-setters.

  • An Australian Cattle dog born in 1910 lived to be an impressive 29 years old!

  • Impressive, given that most dogs live on average from 10 to 13 years, depending on the breed,

  • of course.

  • Lifestyle and health play an important role as well, but that’s another story.

  • Weve all heard the statistic, “1 dog-year equals 7 years for a human.”

  • But the 1:7 thing isn’t as simple and universal as it’s often quoted.

  • It’s more like: for the 1st year of their life, dogs age 15 human years!

  • Then they age about 4 human years with each birthday.

  • After 6 years of life, the larger breeds start aging at a faster rate.

  • And this can help explain why a Great Dane is pushing it at age 10, yet a chihuahua can

  • double that!

  • But the question is: WHY?

  • Scientists have been trying to figure that out for decades.

  • And not just about larger breeds living shorter, but dogs in general.

  • What sets the limits?

  • And why do cats outlast our canine friends?

  • These questions were first asked by Aristotle back in the BCE times.

  • They obviously didn’t have the technology or medical knowledge we do now, so the philosopher

  • suspected that the reason wasmoisture!

  • He believed that elephants, for example, lived longer than mice because they contained more

  • liquid.

  • Of course, the moisture thing wasn’t right, but his observations were pretty accurate

  • overall: bigger animals do tend to live longer than smaller ones.

  • For almost a century, people believed that creatures with faster metabolisms don’t

  • live as long because their bodies get tired.

  • But that’s not entirely correct either, at least according to experts who study aging

  • in animals and humans.

  • Let’s consider our parrot friends.

  • Their hearts beat up to 600 times per minute, yet they have an average lifespan of 20 to

  • 50 years!

  • Their size has a lot to do with that, but they still outlive many other creatures with

  • slower heartbeats (and thus, metabolisms) by decades.

  • Another theory on why some animals live shorter has to do with these things called free radicals.

  • These are toxins in our environment that were exposed to every day.

  • Over time, they damage cells and cause aging.

  • So, if you think about larger animals that have more cells in their bodies, then they

  • don’t feel the adverse effects of these free radicals as dramatically as small animals

  • with fewer cells do.

  • Larger species living longer could simply be a result of where they stand on the food

  • chain.

  • Take elephants and whales, some of the most massive creatures on this planet.

  • It takes them longer to grow because hardly anyone would dare to attack them, right?

  • Whereas mice and other small targets that are easily preyed on live life in fast-forward.

  • They rush to grow up and reproduce ASAP so that their species doesn’t go extinct.

  • Ok, but those are all animals that live in the wild, not in cozy houses with people to

  • take care of them.

  • So, WHY don’t dogs live longer?!

  • Well, for one, dogs haven’t always been our pets, but we do have a looong history

  • together!

  • Humans and canines have been friends for thousands of years.

  • DNA suggests that wolves and dogs split around 100,000 years ago.

  • The oldest solid record that shows dogs were domesticated was about 14,000 years back.

  • So it’s not like we just started welcoming full-blown wolves into our homes!

  • We adored our new pals so much that we even painted them in some caves in Saudi Arabia

  • 10,000 years ago.

  • But some scientists believe we domesticated our canine friends long before that.

  • Maybe that’s why they don’t live very long?

  • Weve been spoiling them with the comforts of domestic living.

  • Not to mention cross-breeding them to make adorable new designer types: maltipoos, chiweenies,

  • puggles.

  • Have we messed with their ancient wolf DNA a little too much?

  • It’s a reasonable questionthe only problem is: wolves only live 6-8 years.

  • Yeah, not as long as dogs!

  • Well, the harsh conditions of the wild probably have a lot to do with that.

  • There’s a theory suggesting that dogs don’t live as long because theyre just so sociable!

  • They live in packs, right?

  • The way it usually goes is when a species lives in groups, theyre more likely to

  • spread illnesses.

  • Whereas cats evolved to protect themselves from predators, and we can see that today

  • too.

  • This independent nature can prolong an animal’s lifespan by about 3 years!

  • Hence, why Whiskers usually makes it longer than Fido.

  • There are other smaller creatures that live longer because theyve been able to avoid

  • dangers.

  • What comes to mind are bats and mole rats, which kinda look like mini hairless walruses!

  • Both have an average lifespan of 20-30 years.

  • Now that were on the topic of smaller species, it gets more complicated, especially because

  • some small dogs outlive larger ones.

  • A 150-lb Irish wolfhound is lucky if they make it past the age of 9.

  • But an 8-lb Papillon will usually surpass a decade of life.

  • Here’s where size can have a negative effect on health.

  • Large dogs grow faster, right?

  • Well, their bodies also need to carry more weight, and their hearts must work hard to

  • keep all that mass working smoothly.

  • Large species like Saint Bernards and German Shepherds are more prone to hip dysplasia.

  • Siberian Huskies can often develop immune problems.

  • Also, some breeds are younger than others, and they haven’t had enough time to evolve.

  • The good thing is that our favorite animals are living longer these days than they used

  • to.

  • It could be genetics, or, like for us humans, more developed medicine and better-quality

  • foods may be playing a role in prolonging lifespans.

  • Whatever it might be, over the past 40 years, both dogs and cats are living twice as long

  • than they used to!

  • Maybe it’s those cute little sweaters we put on them in the winter?

  • nah!

  • Now, earlier I saidgoofycreatures for a reason, and you know exactly what I’m

  • talking about!

  • Does your dog take a treat or a big cheekful of food from its bowl only to carry into another

  • room to eat?

  • Like a lot of strange things your dog does, it’s ancient instincts controlling their

  • brain.

  • It goes all the way back to wolves and the pack mentality.

  • Dogs are social animals with a clear understanding of hierarchy.

  • In that small society they formed, each member of the pack had its own social order.

  • There’s the leader who makes all the important decisions, like when and where to hunt, when

  • they rest, when they can eat, and who can eat.

  • Domesticated dogs follow the same hierarchy rules, and they recognize their owners as

  • the pack leader.

  • So, when you give them food, they prefer to take it to another room so that you won’t

  • try to steal it!

  • And that circling ritualistic thing they do before they lie down?

  • Again, this isn’t something they learned but a result of their wild instincts.

  • Spinning in circles might happen for several reasons.

  • One, is to prepare the ground and make it comfy.

  • The other, is to position themselves in the right way to prevent an attacker from getting

  • to them.

  • Or in my dog, Riley’s case, it’s to occupy the majority of the space on the bed.

  • What about rolling around in the grass like a goofball?

  • Several reasons for that.

  • The first one is because it’s nice and soft, and it feels good.

  • Even I do that!

  • The second is to get rid of dirt and debris off their backthe grass is a perfect

  • cleaner.

  • But the third is one you might not see coming when youre staring at your little Yorkie

  • rolling around the yard: it’s their predatory DNA!

  • When they smell something in the grass they can hunt, theyll use the grass to mask

  • their own scent and sneak up on their prey.

  • Most of the time, though, theyll do it instinctively and then forget about it!

  • Crazy dogsgotta loveem!

  • Hey, if you learned something new today, then give the video a like and share it with a

  • friend!

  • And here are some other cool videos I think you'll enjoy.

  • Just click to the left or right and stay on the Bright Side of life!

Now for some fast facts: The longest-living person was a woman who made it 122 years and

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為什麼狗比我們老得快 (Why Dogs Age Faster Than Us)

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    林宜悉 發佈於 2021 年 01 月 14 日
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