Bucky is a dog who appears in Season 1 of Young Sheldon, in the episode "A Dog, a Squirrel, and a Fish Named Fish". He is a hunting dog owned by Herschel Sparks' brother-in-law in Medford, Texas, but is in the care of the Sparks' Family while his owner is in prison. He has only appeared in one episode and it is unknown what happened to him after that episode. It can be assumed that he continued to live with the Sparks until his owner got released from prison. It is unknown what breed of dog he is, but, according to Herschel, he is part hunting dog. He is a mix of black and brown coloring on his fur and has a white patch on his chest. He wears a brown leather collar and has floppy ears and a long tail. He is portrayed by a dog named Paco.