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.

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

Mom Katie Whiddon posted the video to Instagram. According to the “Today” show, Whiddon openly discusses family life on her blog, Admirably Diverse.