Trivia

Scenes originally from the movies Au pays de l'exorcisme (1972) (crocodile being killed with a small knife, and a woman being killed and eaten by cannibals), Le Dernier Monde cannibale (1977) (Me Me Lay's death sequence), and La Montagne du dieu cannibale (1978) (castration scene, footage of a snake eating a monkey, and a man being pulled into the water by a crocodile), were edited into this movie.

The antagonist character of Jonas, and his commune and of the climatic mass suicide, was inspired by the Jim Jones People's Temple cult in Guyana who committed mass suicide in November 1978 resulting in the deaths of over 900 people. Given its proximity to the real events, "Eaten Alive!" is one of the earliest fiction films to depict the Jonestown Massacre.

Years after the filming, Umberto Lenzi said that if he had know that Robert Kerman was a porn actor, he wouldn't have hired him (neither in this nor in Cannibal Holocaust (1980))(EDIT: Lenzi did not direct Cannibal Holocaust). Coincidentally, Jake Teague (Logan) was also a porn actor, and as Kerman, also appears in both movies.

With the exception of the snake killed by Ivan Rassimov, all the real animal deaths were archive footage from Au pays de l'exorcisme (1972), Le Dernier Monde cannibale (1977) and La Montagne du dieu cannibale (1978).

Robert Kerman didn't have to audition for his role.