"The Dog" is the twenty-first episode of Seinfeld. The episode was the fourth episode of the show's third season. It aired on October 9, 1991.
Jerry is on a plane back home when the drunk man next to him falls sick and asks Jerry to take care of his dog while he recovers. He promises to call him and take the dog back when he comes to New York. The dog "Farfel" (although it can frequently be heard barking loudly, the dog is never seen) turns out to be very disobedient and Jerry can't go out anywhere.
Jerry, George and Elaine were supposed to see the movie "Prognosis Negative" but Jerry informs them that he has to take care of the dog and asks them to go without him. George and Elaine realize they don't have a lot in common without Jerry around. They have a good conversation only when they are making fun of Jerry and his habits. Kramer also attempts to break up with his girlfriend, who is also unseen, in a very melodramatic fashion and later attempts to get back together in the same fashion.