Whether the animals are capable to smile or not remains controversial. Some scientists say that we tend to see human expression on the animal faces, but they do not exist. Meanwhile some studies take in consideration the possibility that animals could smile for real.

If you ask me I strongly believe that animals can show pain, fear, anger, love and happiness by gestures and facial expression.

Smiling baby urangutan

Smiling baby ourangutan
Smiling baby urangutan

Smiling lion

Day dreaming?:)

Smiling lion
Smiling lion

Smiling bear

Smiling bear
Smiling bear

source: Nathan Roberton

Smiling sloth

Smiling sloth
Smiling sloth

Smiling bird

African Shoebill looks like smiling for the camera.
African Shoebill looks like smiling for the camera.

source: BNPS Morgan Trimble

Smiling bird

cute smiling black bird
Recurve billed bushbird also looks like smiling for the camera.

Smiling owl

Smiling baby owl
Smiling baby owl

Smiling fish

Smiling fish
Smiling fish

Smiling hedgehog

Smiling baby hedgehog
Smiling baby hedgehog