Oct 7

Harvey Ball created the original smiley face in 1963. This famous symbol is used worldwide to represent good will and happiness.

Since 1999, the first Friday in October is known as World Smile Day, a time to remember the true meaning of the smiley face, encourage acts of kindness and, of course, spread smiles.

If you’re feeling a bit grumpy or having a bad day, don’t worry…    

               Turn that frown. . .                                             . . .upside down

Weddell seal photo

Weddell seal in a breathing hole

Weddell seal photo

Weddell seal


The Weddell seal is certainly making the effort for World Smile Day!

It is often said that smiling is contagious, so let’s hope these gleeful grins on ARKive leave you positively beaming.

Killer smile

False killer whale photo

False killer whale

The false killer whale has 8 to 11 pairs of large, cone-shaped teeth. Its Latin name crassidens means ‘thick-tooth’.

Toothy smile

Ember parrotfish photo

Ember parrotfish teeth

The ember parrotfish’s teeth are fused into a beak, creating a dazzling smile. It uses its beak to feed on algae by scraping it from the reef.

Never smile at a crocodile

Cuban crocodile photo

Cuban crocodile

The Cuban crocodile has an impressive white smile. The broad teeth at the back of the mouth are thought to be adapted for crushing turtle shells.

Rotten smile

Mountain gorilla photo

Young male mountain gorilla

This young mountain gorilla could do with a scale and polish! Eating plants with a high tannin content is thought to contribute to the black tartar staining on the teeth. The tartar accumulates over time and gum disease is a common problem in older gorillas.

Green grin

Green and golden bell frog photo

Green and golden bell frog

The beautiful green and golden bell frog looks very relaxed in the water, although it is equally as happy foraging and basking in dense vegetation and grassy habitats.

Chirpy bird

Recurve-billed bushbird photo

Recurve-billed bushbird

The rare recurve-billed bushbird, also known as the ‘smiling bird’ has an unusual appearance, caused by its up-turned bill. It uses its bill to break open small twigs and bamboo in search for arthropods.

Why not join in on World Smile Day and “Do an act of kindness. Help one person smile!”

Can you find any other smiling species on ARKive? How are you celebrating World Smile Day? Let us know!

Rebecca Goatman, ARKive Media Researcher