Big brother gets tattoo of little brother with Down’s syndrome and his reaction goes viral

A young man with Down syndrome charmed netizens with his adorable reaction when he saw his older brother's tattoo for the first time.

His reaction was captured in a video his mother, Soares Sheila, shared on Facebook.

"Look at my puppy's reaction to the beautiful tribute, his face tattooed inside a lion's mouth. The video is EXCITING," she captioned the post.

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The tattoo is that of the younger man's face inside the mouth of a lion. The younger brother looked at the tattoo in awe as he ran his hand across his brother's arm.

He then gives his older brother a kiss and a warm hug. He obviously approved of the tattoo.

The adorable video has been viewed 6.1 million times with shares reaching more than 100,000.

In the comments, Soares Sheila wrote that she did not expect the video would go viral.

"This is called God. Because he was the cause of the success of this video, because contrary to what many people think, I have never had anything easy in this life, only us and God," she stated.

Approximately one in every 700 babies in the United States is born with Down syndrome, according to the National Down Syndrome Society, citing date from the Centers for Disease Control and Prevention.

About 6,000 babies with Down syndrome are born in the United States each year, making the syndrome the most common chromosomal condition.

People with Down syndrome have an extra, critical portion of chromosome 21 percent in all or some of their cells.

Despite decades of research, the cause of the extra full or partial chromosome is still unknown. However, maternal age has been identified as the only factor linked to an increased chance of having a baby with Down syndrome.

There remains no definitive research that links Down syndrome to environmental factors or the parents' activities before or during pregnancy.