The Day of the Dolphin

Unwittingly, he trained a dolphin to kill the president of the United States.

Title: The Day of the Dolphin
Overview: Dr Jake Terrell, who has been training a pair of dolphins for many years, has had a breakthrough. He has taught his dolphins to speak and understand English, although they do have a limited vocabulary. When the dolphins are stolen, he discovers they're to be used in an assassination attempt. Now he is in a race to discover who is the target, and where the dolphins are, before the attempt is carried out.
Runtime: 1 h 44 min
Release Date: 19 December 1973
Actors: George C. Scott, Trish Van Devere, Paul Sorvino, John Dehner, Severn Darden, Elizabeth Wilson, Fritz Weaver, Jon Korkes, Edward Herrmann, Leslie Charleson, John David Carson, Victoria Racimo, William Roerick, Phyllis Davis, Pat Zurica, Jon Korkes, Willie Myers
Certification: PG
Genres: Action, Crime, Drama, Science Fiction, Thriller; IMDb