May 8th is World Smile Day. Look at the smiles of these little animals. They are silly, cute, but also super healing!

On May 25, 2011, like the dolphins, the finless porpoise also had a natural smiling face.

But behind the smile, there is an unspeakable sadness.

Image source: ICphoto

Release time: 2021-05-08 08:51:40 【Editor: Yang Yanyu】