A 3-year-old boy born without arms or legs is going viral for his nurturing act of kindness toward his new baby brother.

Camden, 3, was born with Amelia-phocomelia syndrome, meaning he was born without parts of his skeletal system. Despite not having arms and legs, he's a devoted big brother. A video posted to Instagram shows Camden comforting his brother, Jaxton, by helping to put his pacifier back in his mouth.

>> Watch the video here

The video shows Camden rolling over on his back to put the pacifier back in Jaxton's mouth, which made him stop crying.

>> On HotTopics.TV: Little sister speaks beautifully about brother with Down syndrome: ‘He’s perfect’ 

Mom Katie Whiddon of Denton, Texas, posted the video to Instagram. According to the "Today" show, Whiddon openly discusses family life on her blog, Admirably Diverse.