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My Mum and I just worked out who is oldest out of her and our two dogs with dog year math and it turns out the dogs are 64 and 66, and she is 63, so actually the dogs deserve more respect than her

#im laughing #dog math #dog age #babble

Not all strong, smart dog breeds make the cut as police dogs—and here’s why! 🐶

Shiba Inu 🐕: These independent spirits are notorious for their stubbornness. If they disagree with a command, they’ll look at you like, “Nah, not today!” Refusing orders? Definitely not police material.

Siberian Husky & Alaskan Malamute ❄️: These playful Arctic troublemakers are more into fun than following rules. Imagine them on duty—always waiting for their next play break instead of chasing suspects!

Golden Retriever 🐾: Super friendly and trusting, Goldens believe everyone’s a friend. If they caught a robber, they’d probably wag their tail and invite them to play instead of arresting them!

Tibetan Mastiff 🐻: Strong-willed and powerful, these dogs can be too much to handle. On the attack, they’d take down the bad guys and anyone else who gets in their way!

Border Collie 🧠: Known for their intelligence, these clever canines prefer doing things their way. They’d likely tell their handler, “You’ve got a gun—why don’t you handle it?” Born leaders, not followers!

These lovable, goofy, and independent breeds are awesome companions, but maybe not ideal for police duty! 🚓💙

#dog breed #dogs of tumblr #puppy #dogs #dog #dog training #dog age #dog health #shiba inu #tibetan mastiff #border collie #golden retriever #alaskan malamute #siberian husky #petlove

#pet #dog #dog age

People generally convert a dog’s age to human years by multiplying its age by seven. But a new study shows the math is way more complex.

To estimate your dog’s age in human years, multiply the dog’s age by seven, right? Wrong.

A more accurate conversion isn’t so easy to do in your head: Multiply the natural logarithm of the dog’s age by 16, then add 31. Researchers report this new canine age formula online July 2 in Cell Systems.

As animals get older, tiny chemical tags called methyl groups get added and removed from DNA. These changes track with different stages of growth and can be used to determine biological age. Scientists can even compare changes across species. In this case, the researchers compared the methylation states of 320 humans, ages 1 to 103 years, with those of 104 Labrador retrievers, ages 5 weeks to 16 years.

The relationship between human and dog years changes over time, the scientists found. Early in life, puppies develop much faster than humans, but as dogs get older, their aging curve begins to flatten. An 8-week-old puppy is roughly the same age as a 9-month-old human. A 1-year-old dog corresponds to around 31 human years, and a 4-year-old dog is closer to a 53-year-old human. The new equation also lines up the average life span of a Lab — 12 years — with the average 70-year human life span.

The study focused only on yellow Labrador retrievers. Since the life spans of other breeds vary, further studies are needed to find out the real age of every very good dog, the scientists say.

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Dog days

This graph shows how Labrador retriever ages correspond with human ones, based on a comparison between how small chemical tags on DNA change over time in both species. For example, a 1-year-old dog corresponds to around 31 human years (second dot from left), and a 4-year-old dog is closer to a 53-year-old human (third dot).

How a dog’s age translates to human years

CREDIT: T. WANG ET AL/CELL SYSTEMS 2020

#science #scied #sciblr #dogs #good dog #dog age #canine #yellow labrador retrievers

🧮🐕 Ever wondered how old your dog is in human years? 🐾 Time to find out! Whether they’re a mischievous pup 🐕 or a wise senior dog 🧡, their age tells a whole new story!

👶 pup : Age 1 = 15 human years! 🎉 Adult : Age 5 = 36 in human! 🐕 Senior: Age 14 = 78 human years!

How old is your dog in human years? Share your pup's age in the comments! 🐶⬇️⬇️

#petlove #dog health #dog age #dog of tumblr #dog #dogs #dogs of tumblr #puppy #chihuahua

What’s your dog’s human-equivalent age? Just multiply how old it is times seven, right? Uh, no. And here’s why.

How old is your dog? Maybe it was born four years ago. At that age, a human would still be a kid. Your dog, however, acts like an adult. You might have heard that to get a dog’s “biological” age, just multiply its age in years by seven. That would make your dog equivalent to a 28-year-old human. But that would probably be wrong, a new study shows. Your dog’s actually more like a 53-year-old human.

Multiplying a dog’s age by seven doesn’t really work, says Matteo Pellegrini at the University of California, Los Angeles. He studies bioinformatics — a research field that uses computers to analyze biological data. He was not involved in the study. On the surface, he notes, multiplying by seven makes sense. On average, people live seven times longer than a dog. So, he notes, “It’s just dividing the human lifespan by the dog lifespan.”

But there are problems with that simple computation. After all, a one-year-old baby is just learning to walk. A one-year-old dog is adult enough to have puppies of its own. This is because species develop at very different rates. Aging doesn’t even happen at the same pace over an individual’s life. “When you’re a newborn, your body is changing very quickly,” Pellegrini explains. “It slows down over time.”

Explainer: What is epigenetics?

Fortunately, dogs and humans both hit very similar developmental milestones. We’re babies (or puppies), then kids (or, er, still puppies), then adolescents and then adults. As we go through those stages, our DNA also undergoes a change. The molecule that carries genetic instructions stays the same. But over time, this DNA acquires or loses tiny chemical “tags.” These are called epigenetic changes. The tags, known as methyl groups, act like little switches that can turn on or off particular genes in that DNA.

Explainer: What are genes?

The genome is the complete set of the genes present in an organism’s DNA. “Think of taking a … marker and start drawing in different places in the genome,” says Elaine Ostrander. She studies genetics at the National Human Genome Research Institute in Bethesda, Md. The marks determine how different genes in the DNA get used to make proteins. A complete set of the methyl marks on DNA is called a methylome (METH-el-ohm).

As an animal ages, so does its methylome. How it changes is very predictable. Most adolescent humans will have DNA marks that are in one pattern, while humans nearing 65 or 70 show a different pattern of DNA marks. The same is true for dogs. If the epigenetic markings of humans and dogs at different ages were compared against one another, would there be “places that were kept getting marked up in the same way?” Ostrander and her colleagues wondered. If there were, would finding that pattern in one species point to an equivalent age in the other? Comparing patterns that way might allow people to get at the “real” age of a dog.

To test this, her team looked at the methylomes from 104 purebred Labrador retrievers. Her team has been collecting DNA samples from dogs around the United States since 1993. “I picked Labs because they can live a long time [for dogs], and we were able to pull [the DNA] out of the freezer,” Ostrander says. “We were able to take DNA samples from Labs that were anywhere from a few months old to 16 or 17 years old.” The researchers compared the dog methylomes to methylomes of 320 people between the ages of 1 and 103.

And it worked. By comparing the patterns, they scientists found they could figure out how dog years relate to human years.