Or Arnold the Pig from Green Acres. Many pigs, male and female, were used.
From Wiki...
"The character of Cheeta was a composite role created through the use of numerous animal actors. According to journalist R. D. Rosen, "In each Tarzan movie, the Cheeta role [was] played by more than one chimp, depending on what talents the scene called for."[1] Known and alleged performers of the role include: (See link for details)"
ie: "Cheetah-Mike, a male chimpanzee owned by Suncoast Primate Sanctuary after being donated from Noell's Chimp Farm in Palm Harbor, FL.[14] Alleged to have been born about 1931 (claimed age in February 2008 was 77)"
“It seems the role of Cheeta was played by several different animals just as Lassie the dog was.”
But not this one:
http://en.wikipedia.org/wiki/Cheeta