Who is the baby? The correct way to calculate the dog's age

Dogs are man’s best friends.

We often say that one year in a dog’s life is equivalent to seven years in human life.

But a one-year-old dog is already in heat.

A seven-year-old human is still a child;

It is said that the world's oldest dog lived for 29 years.

If we calculate according to 29*7,

A 203-year-old man is about to become a spirit.

So one seven equals seven, two seven equals four.

Dogs and humans age

There must be a problem.

How should we calculate it correctly?

Some scientists pointed out:

Almost all mammals

They all go through similar life stages.

There will be births, babies,

Adolescence, maturity and old age.

But each animal has a different stage process.

In order to better measure age from a physiological perspective,

They proposed a

The concept of "epigenetic clock".

You may not understand it at first, don't worry.

Brother Rong will translate it for you right away.

first,

You may be familiar with the concept of "heredity".

Simply put, the genome.

My parents gave it to me.

It may determine your height, weight,

What do you like to eat, will you have a certain genetic disease, etc.

But the genome does not completely determine

What kind of people we are!

We all know the story of "Mencius's Mother Moved Three Times".

That is, the environment changes people.

This principle also applies to genetics.

We call it "epigenetics" and discovered that

That is, when the gene sequence remains unchanged,

Some of our outward appearances will also change.

It can even be passed down to future generations.

(Copyrighted image from the gallery, no permission to reprint)

Why?

This is mainly because of our genes.

Being given many "labels",

One of the tags is called "methylation".

They are like switches

Can determine whether a gene works.

Scientists have discovered that

The methylation profile can be used to determine biological age.

And its accuracy reaches over 98%!

This is the "epigenetic clock".

By studying the "epigenetic clock", we found that:

For many species, aging is not the same as being old.

Rather, it should be manifested as a gradual decline in physiological functions.

For humans,

Normal people without any disease age normally.

But people with AIDS, cancer,

Or for those who have been living an unhealthy lifestyle for a long time,

However, accelerated aging may occur.

He's the kind of 30-year-old who has the body of a 50-year-old.

Back to the question of the dog's age.

The researchers matched

DNA methylation indexes of humans and Labrador retrievers,

A conversion formula is derived:

Dog's equivalent human age =

16 * ln(dog's actual age) + 31.

(Copyrighted image from the gallery, no permission to reprint)

According to the Labrador formula,

A 1-year-old dog is equivalent to a 31-year-old human.

A 2-year-old dog is equivalent to 42 years old.

A 5-year-old dog is equivalent to 57 years old.

A 10-year-old dog is equivalent to 68 years old.

As for the 29-year-old birthday boy,

That’s equivalent to about 85 years of human life!

Of course.

Different dog breeds age at different rates.

The researchers found that

Smaller dogs tend to live longer.

A 7-year-old Chihuahua is still in the prime of life.

But a Great Dane of the same age

But he is already an old dog.

For every 2 kg increase in body weight,

The dog's life expectancy will be reduced by about one month.

In short, the heavier the dog,

Life expectancy will also be relatively shorter.

Obesity can also cause breathing problems for dogs.

Joint diseases and certain cancers.

Unlike humans,

To experience about 1/4 of life

To be mature and live independently,

A dog's first year of life

From childhood to adolescence,

When a dog is 1 year old, you think it is a baby.

In fact, it is already a 31-year-old adult.

Oh no, a grown dog.

After maturing so quickly,

It will gradually slow down the aging process.

After a long middle age,

Then enter old age.

The reason many people don't keep dogs is that dogs' lives are too short.

The separation is too painful,

But think about it the other way around.

It is a blessing for dogs to have humans accompany them throughout their lives.

Companionship is mutual!

Source: China Digital Science and Technology Museum