The dog in The Twilight Zone episode “The Hunt” is named Rip.
Rip is the coon dog belonging to Hyder Simpson, an elderly mountain man played by Arthur Hunnicutt. Hyder’s wife, Rachel, dislikes having Rip in the house, but Hyder refuses to give him up because the dog once saved his life. Their loyalty becomes the emotional center of the episode.
“The Hunt” originally aired on January 26, 1962, as the 19th episode of the third season. After Hyder and Rip apparently drown while chasing a raccoon, they encounter a series of supernatural gates leading toward the afterlife. Hyder rejects an apparently welcoming entrance when he is told Rip cannot accompany him.
The episode’s final twist reveals that the first gate led to Hell, while Rip’s instincts recognized the danger. The story was written by Earl Hamner Jr. and drew on his earlier teleplay “The Hound of Heaven.” The name is sometimes overlooked because Rip is referred to mainly as Hyder’s coon dog.