Ace Ventura: When Nature Calls (also known as Ace Ventura 2 or Ace Ventura 2: When Nature Calls) is a 1995 American comedy film and the sequel to the 1994 American film Ace Ventura: Pet Detective. Jim Carrey reprises his role as the title character Ace Ventura, a detective who specializes in retrieval of tame and captive animals. Ian McNeice, Simon Callow, and Sophie Okonedo co-star. Tommy Davidson, who co-starred with Carrey on the show In Living Color, makes a cameo appearance in the film.
The film was written and directed by Steve Oedekerk, who had also collaborated in the production of the first film. It was followed by a direct-to-video sequel, Ace Ventura Jr.: Pet Detective, in 2009.