It Shouldn't Happen to a Vet (in the United States also known as All Things Bright and Beautiful), is a 1976 sequel to the 1975 film All Creatures Great and Small. Although having the same title as James Herriot's second novel, the film is actually based on his third and fourth novels, Let Sleeping Vets Lie and Vet in Harness, which in the United States were released as a compilation volume titled All Things Bright and Beautiful. It is part of a series of movies and television series based on Herriot's novels.

In this film, John Alderton has taken over the role of James and Colin Blakely that of Siegfried (portrayed in the first film by Simon Ward and Anthony Hopkins, respectively), while Lisa Harrow returns as Helen. It also features Richard Griffiths in his debut film appearance as Sam. The film was directed by Eric Till, and the screenplay is by Alan Plater. The film, which has a British-American joint venture, was entered into the 10th Moscow International Film Festival.