India, Jan. 21 -- Chris Palmer, an Arkansas man, has gone missing and the National Park Service has sought help from the public to find him. Palmer was officially declared a missing person on January 16.

He was traveling with his dog and authorities believe they may still be in the area. Here is what you need to know about Chris Palmer and his disappearance.

His father, Bren shared a post on Facebook, which was widely shared.

"I don't post alot on here but id like to ask for help. Our son Chris Palmer and his dog Zoey went to the smoky mountains to camp on Dec 8th. He does alot of camping in the national forests. He let's us know when and where he is going and when he is expected to return. He was at the Boone Fork area from Dec 10th t...