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Hi, Mirko here from Healthy Pet Systems.

Today I will tell you why do dogs bark.

So let's dive in.

First reason, greeting barking.

Dogs sometimes bark as a sign of saying "hello" and this is usually accompanied by a relaxed

body language and tail wagging.

Second reason, barking as a sign of territorial control.

When dogs notice people, other dogs or animals approaching their territory, their response

is usually excessive barking.

Third reason, barking to seek attention.

Sometimes dogs bark to seek attention or rewards like food or playtime.

It's the most common barking reason for puppies.

Fourth reason, socially influenced barking.

A dog can bark in response to the barking of another dog.

Fifth reason, barking because of an alarm.

Dogs do also bark when they respond to noises and sights.

This is not limited to the defense of their territory.

Ok, those are some of the reasons.

To find out more, I created a great guide about the dog barking problem.

In it, you will find 7 reasons why dogs bark, 9 ways to get your dog to stop barking, 3

devices that can stop the barking problem, and other tips related to dog barking problem.

The link is down below in a description.

If you like this video, hit the subscribe button to receive more like it in the future.

And remember let's keep our pets healthy!

Bye!

For more infomation >> Why Do Dogs Bark at Other Dogs And People? 5 Best Reasons - Duration: 1:49.

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Why do Indians spend so much on weddings? - Duration: 8:16.

Weddings are by nature an expensive ordeal.

If you are sponsoring a party for all your family and friends

well

that's going to cost you some money.

There's going to be the cost of a space,

and the cost of food

for the 50-100 odd people you invite to your wedding.

so yeah

by that definition you are likely

to incur an expense,

an expense that is considerably higher

than your average everyday expense.

But this is not the wedding

I'm going to talk about today.

The wedding that I am going to talk about,

and which is more common nowadays

is this kind of wedding.

The wedding of excess!

The wedding which begins with a

lavish invitation,

and a luxury box of exotic sweets.

An engagement party in the finest hotel in town.

An all-night bachelor's party

at a high-class pub in the city,

with unlimited booze and food.

Then a music ceremony,

posh place,

lots of people, lots of food,

lots of decoration.

A high-production bollywood style movie,

with the bride and groom as the stars,

shown to all the guests.

Professional entertainers,

magicians,

samba dancers,

acrobats

A full-night marriage ceremony.

A high-class venue for the wedding.

Maybe an exotic destination.

A beach

The hills.

An island?

Lots of food.

Lots of different kinds of food.

Indian cuisine

mexican cuisine

thai cusine

malay cuisine

vietnamese cuisine

indonesian cuisine

burmese cuisine

chinese cuisine

afghani cuisine

french cuisine

italian cuisine

Professional videographer

with professional cameras,

gyroscopes for stabilization,

drones for air-coverage,

professionally-edited videos,

Designer clothes,

designer bridal wear,

designer shoes,

designer head gear,

jewellery,

more jewellery,

lots of jewellery,

expensive decoration,

exotic flower,

exotic sweet smelling flower from South Africa

A band,

a horse,

a couple of horses more,

a chariot,

maybe a nice car, especially rented for the day.

Guests.

Lots of Guests.

500 guests.

No, a thousand.

No 2000 guests.

You have never met 1/4 of them ever in your life.

1/2 of them are mild acquaintances,

you wouldn't spend a dime on, on a regular day.

Only a handful of the 2000 guests actually mean something to you.

Only a handful of the 2000 guests, you care about,

and they care about you.

Typically a wedding like this costs somewhere between

THAT'S a lot of money.

Maybe a large fraction of the family's fortune.

In some cases it can be the entire lifetime

savings of the family.

In some cases people also take

personal loans to meet the expenses incurred in weddings.

So I guess the point is,

The answer is simple,

and we all know it.

I'm not saying anything new here.

It's a once in a lifetime opportunity

to show off your opulence to the entire society.

I found this quote online,

by a lady who works as a house maid.

But does everyone enjoy spending

their hard-earned money in weddings?

A lot of people do it out of peer pressure.

Because they are scared.

Fear is a devastating emotion.

But what are they afraid of?

What will people say if I throw a cheap-ass wedding?

It's hard! It's just so fucking hard

to not spend a fortune on weddings.

Can you imagine how painful it is

to not spend a fortune on weddings.

What I just said is so strange and so non-sensical.

Can you imagine how painful it is

to not spend a fortune on weddings.

This is such a powerful statement.

We have built this institution,

this system,

where our minds are forcing us to spend

our fortunes recklessly on one night.

Just blow away all our hard-earned money on meaningless stuff.

Just imagine what all we could have done with that money?

Buy a nice house,

spend the rest of our lives in that house.

Keep that money in the bank, in case an emergency strikes.

Go for a wonderful trip all around the world.

Quit your jobs and pursue that one hobby

you've always wanted to pursue.

So why do we feel compelled to spend our money on other people.

Feeding them all these different kinds of cuisines?

On a regular day

we wouldn't even spend a dime on them.

Because if I don't spend.

What will people think of me,

what will everyone think of me.

But if I spend. I'll be a king.

And people will think all nice things about me.

Wouldn't that be glorious?

But damn. I don't want to spend so much. It's just insane.

But what will people think about me

if I give a cheap ass wedding?

My daughter's wedding should be the best wedding in town.

So that everybody remembers me and everybody respects me.

Doesn't matter if I have to take a personal loan for it.

It's hard, man.

I think it has been very deeply ingrained

in our minds to spend excessively on weddings.

So deeply ingrained that

we think it's completely normal to do what we do.

like throwing trash on streets

In fact it just seems absurd

to not spend like a madman in a wedding.

It's like breaking some kind of

fundamental law of the society.

For example, if I tell you,

I want to quit my high-paying corporate job,

and do nothing for the rest of my life.

Just sit at home and read books.

Do a part-time job maybe.

Deliver pizzas maybe.

I don't want to work anymore.

Just live my life, relax,

do nothing, read books, and sit at home.

I have the money.

I have the house.

I have the books.

And I just want to sit at home

read those books and chill for the rest of my life.

There's nothing wrong with it. But

it seems like I'm breaking some fundamental law of the universe.

How can I do nothing?

How can I be nothing?

What will people think about me

if I am unemployed?

I am just 29 for God's sake.

What will the society think of me?

Everybody's doing something.

Everybody's someone.

It doesn't matter if I hate my job.

It doesn't matter if I don't need it.

I have to be something.

I have to be someone.

Otherwise I'll be an outsider.

I'll be no-one.

Because

Because no one values nothing.

Well, it's pretty much the same for weddings.

If you don't spend like a maniac in your wedding.

You are nothing.

You are no-one.

And it's hard to break out of that thinking pattern.

More so, when almost every other

human around you is behaving the same way.

We are a social species.

And if we do something

that is majorly different from the herd,

it causes anxiety.

It causes stress.

And so

I feel for everybody who has to go on this spending spree

during weddings so that they can be perceived as

'normal' functioning members of the society.

Because the sad truth is,

deep down somewhere,

we all know how abnormal this collossal waste of money is.

Well, as Mr. Gandhi once remarked,

So start by spending less in YOUR wedding.

And one by one if everybody starts doing this

then it will no will longer be the norm to spend excessively on a wedding.

So I repeat again.

If you want to see a change,

For more infomation >> Why do Indians spend so much on weddings? - Duration: 8:16.

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Why Do We Need a 23 Million Digit Prime Number? - Duration: 3:58.

You remember prime numbers right?

Numbers that can only be evenly divided by one and themselves?

Well it turns out finding prime numbers is not only useful for protecting data, but it

could make you money!

On December 26th, 2017, the largest prime number ever discovered was found by Jonathan

Pace of Germantown, Tennessee.

The number is over 23 million digits long, meaning I don't really have time in this

video or my entire life to list the whole thing out, but it's easier to call it by

its nickname, M77232917.

It gets this name because that's the exponent you raise 2 by to find it.

Oh, and don't forget to subtract one when you're done multiplying 77,232,917 twos

together.

Otherwise you just created a number you can divide by two and you'll have wasted all

that time.

Prime numbers found this way, by raising two by a prime exponent and subtracting one, are

called Mersenne primes, named for a 17th century French friar, hence the capital "M" in

the shorthand name.

3 is a Mersenne prime, since it's two to the second power minus one.

Same for 7, which is two to the third power minus one.

But the exponent has to be prime.

Two to the sixth power minus one is 63, which is divisible by 3 so, not a prime.

9 of the 10 largest primes found to date are Mersenne primes, not because they're the

most common -- the Prime Number theorem tells us there must be a simply huge number of undiscovered

primes between this newly found one and the next largest Mersenne prime -- but we find

them because that's how we keep searching for them.

In fact you can be a part of the search for the next one!

You don't even have to do the math yourself, just some software provided by the Great Internet

Mersenne Prime Search, or GIMPS!

The software uses the idle processing power of your CPU to run what's called the Lucas-Lehmer

test, where Mersenne numbers are checked against a specific set of numbers.

If the Mersenne number you're checking divides evenly into a certain number in that set,

then it passes the test and is indeed a prime number.

Obviously it takes quite a bit of horsepower to see if a 23 million digit number divides

into an even bigger number, which is why the project needs the public's help.

Almost 200,000 users are running the GIMPS software and if their PC runs a number that

passes the test, they could win money.

Pace is eligible for a $3,000 prize, and whoever finds a 100 million digit prime could win

$150,000 dollars.It's like cryptocurrency mining for those of us that can't afford

to buy a dozen graphics cards.

You may wonder why we bother searching for primes at all?

Why for the glory, of course!

We've only found 50 Mersenne Primes and next to almost every one of them is the finder's

name for all of nerdy eternity.

Plus prime numbers play a crucial role in keeping data secure.

One standard, RSA encryption, relies on multiplying two large prime numbers together to generate

a key.

Knowing the two primes that went into the key is the secret to decrypting the data,

but it takes an impractical amount of computational power and time to suss out what those numbers

are if you don't already know them.

So the key can be public and your data is still secure.

Of course since the Mersenne primes we've been finding lately are tens of millions of

digits long, these may not be the best candidates for encryption.

If you see a key that's an absolutely huge number, it won't be hard to guess which

Mersenne prime went into it.

Gigantic primes won't be useful until quantum computing is used to break RSA encryption,

and even then we may just use a different method of protecting data.

So there may not be much practical use in searching for Mersenne primes, aside from

winning that $150,000 for running a program while you watch youtube.

I gotta download that software when I get home.

Before you run off and download GIMPS, go ahead and subscribe.

And for more math, find out how ham sandwiches are helping us understand the universe, here.

The largest prime found by hand is M127, so we're obviously a bit past that by now.

Until next time, I'm Julian, don't forget to share that sweet prize money with me when

you win.

For more infomation >> Why Do We Need a 23 Million Digit Prime Number? - Duration: 3:58.

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Alex Sanchez: Why is Man Utd star not playing against West Ham? - Duration: 3:12.

 Sanchez travelled to London with the rest of the United squad yesterday. Boss Jose Mourinho gave no indication during his pre-match press conference that the Chilean was carrying an injury

 Mourinho is due to speak to the press ahead of kick-off where he will likely reveal the reason for Sanchez's absence

 The 29-year-old has struggled to make an impact at Old Trafford following his high-profile move from Arsenal in January

 WEST HAM VS MAN UTD LIVE UPDATES: FOLLOW THE ACTION HERE As an injury seems unlikely, it's possible Sanchez has been dropped for performance-related reasons, similar to the fate Paul Pogba suffered during the week

 Mourinho stripped the French World Cup winner of his vice-captaincy role and left him out of the squad for the shock Carabao Cup defeat at the hands of Derby

 The Portuguese coach was once again forced to defend his relationship with Pogba after footage emerged this week of a tense training-ground exchange between the pair

 Mourinho said: "I explained in detailed to the people that have to know, which is the squad and especially Paul," Mourinho said

 "So, Paul and the other players in the squad, they know in detail the reason why myself and my coaching staff decided to do that

 "I always analyse a player as a player. When a player is captain, I analyse the player by the player perspective but also by the captain perspective

 "And after weeks of analysing and changing opinions with my coaching staff, we made the decision that from now Paul is just a player and not a captain

"West Ham vs Man Utd starting line-ups MUFC: De Gea, Young (C), Smalling, Lindelof, Shaw, Fellaini, Matic, McTominay, Pogba, Martial, Lukaku

 Subs: Grant, Bailly, Mata, Rashford, Fred, Herrera, Darmian. WHUFC: Fabianski, Zabaleta, Balbuena, Diop, Masuaku, Rice, Noble (C), Obiang, Yarmolenko, Arnautovic, Anderson

 Subs: Adrian, Ogbonna, Fredericks, Perez, Antonio, Diangana.West Ham vs Man Utd - How to watch The match will be shown live on BT Sport 1 and BT Sport 4K UHD in the UK

 Pre-match coverage gets underway at 12pm ahead of kick-off at 12.30pm. Existing BT Sport customers will also be able to stream the match via the company's own site and their official app

 EE mobile customers can gain access to the game for free, thanks to a subscription plan recently announced by the network

 They said: "To say thanks for being with us, here's a special sporting treat for our pay monthly mobile and tablet customers: three months' free BT Sport on your EE phone and connected tablet

 "Just text SPORT to 150, register for a BT ID then download the BT Sport app and get watching!"