Arnold Ziffel is a fictional pig featured in Green Acres, an American situation comedy that aired on CBS from 1965 to 1971.

The show is about a fictional lawyer, Oliver Wendell Douglas, and his wife, Lisa – city-dwellers who move to Hooterville, a farming community populated by oddballs.

Arnold is a pig of the Chester White breed, but is treated as the son of farmer Fred Ziffel and his wife, Doris, a childless couple.

The humor that surrounds the character of Arnold comes from his human-like abilities and lifestyle, and from the way the people of Hooterville insist on thinking of him as a fellow human.

[7] Arnold is also artistically talented: he is working on a novel, he plays the piano, and he is an accomplished abstract painter, dubbed "Porky Picasso", whose piece titled "Nude at a Filling Station" wins first prize out of two thousand entries in a student art contest.

[citation needed] One storyline has Arnold inheriting millions of dollars as the sole descendant of the favorite pig of a pork-packing magnate, distinguished by his ability to predict the weather with his tail.

Arnold's trainer was Frank Inn, who trained virtually all of the animals seen in the rural television comedies of the time period, including Petticoat Junction and The Beverly Hillbillies.

In the 1995–1999 American sitcom NewsRadio, the central character, news director Dave Nelson, is a fan of Green Acres and of Arnold in particular.