Is the smile unique to humans?

[watchingfromafar]

A smile is a smile
​

When a wolf shows his teeth,.,./\,./\.,.,

.,.,.,..,.He means business

When we humans show our teeth it’s called a smile

Is the difference an evolutionary thing and once upon a time we smiled for the same reason wolves smile today-?

is a smile universal-? Just asking -

Dada smile:

wolf showing teeth - Google Search
​

Now this IS a smile--​

human smile - Google Search

Why is a human smile so different than other mammals-?​

 

[Dalia]

There are dogs that smile without difficulty.

 

[Cellblock2429]

A smile is a smile

When a wolf shows his teeth,.,./\,./\.,.,

.,.,.,..,.He means business

When we humans show our teeth it’s called a smile

Is the difference an evolutionary thing and once upon a time we smiled for the same reason wolves smile today-?

is a smile universal-? Just asking -

Dada smile:

wolf showing teeth - Google Search

Now this IS a smile--
human smile - Google Search

Why is a human smile so different than other mammals-?​

/----/ "
When we humans show our teeth it’s called a smile"
That's not true -

 

[EvilCat Breath]

Pit bulls have a smile that can light up a room. Apes and monkeys also smile. This topic is just misguided.