US TV
Host Tom Bergeron had promised viewers on Monday night that the animal would appear on Tuesday, reportedly as a mock judge alongside panellists Len Goodman, Carrie Ann Inaba and Bruno Tonioli.
Speaking to Variety, PETA senior VP Dan Mathews said: "That prompted PETA to contact executive producer Conrad Green first thing with a plea that the chimp segment be cancelled."
Green reportedly agreed to cancel the segment and sent an email to PETA saying: "I do appreciate your point that showing a chimpanzee on our show may indirectly lead to other chimpanzees being ill-treated in the future."
A representative for the programme's producer BBC Worldwide said: "Conrad constantly makes last-minute editorial decisions [and] changes, and we are pleased with the result of the October 6 show."
No reference was made to the animal in Tuesday's instalment.
> Click here to find out who was eliminated in this week's show
More: US TV, Dancing with the Stars
Tube Talk
Upstairs Downstairs: Why you should watchTube Talk previews the return of BBC One's rich period drama Upstairs Downstairs.
2012-13 Season
Kate Moennig joins 'Ray Donovan' pilotKate Moennig will play Liev Schreiber's partner in a new Showtime pilot.
US TV Interviews
Debby Ryan talks Disney's 'Jessie'The Suite Life's Debby Ryan stars in new Disney Channel comedy Jessie.
US TV Ratings
'American Idol' grabs 18.6m for FoxAmerican Idol leads Fox to an easy Wednesday night primetime victory.
