Embryo is a 1976 American science fiction horror film directed by Ralph Nelson starring Rock Hudson, Barbara Carrera, and Diane Ladd with a cameo appearance by Roddy McDowall.

Dr. Paul Holliston (Rock Hudson) is a geneticist who has been living alone in his rambling clinic, which he operates out of his home, after losing his wife in a car crash.

However, Holliston fails to notice that the animal's aggression and intelligence are increasing commensurately: while he is out on an errand, it kills an annoying small dog and conceals the carcass.

Eager to use his discovery for the good of mankind, Holliston applies the same technique to an unborn human extracted from a suicide victim.

When the autopsy reveals that Martha's death may have been a homicide, Holliston hurries home and alerts his son Gordon to meet him there to go after Victoria.

When a now-elderly Victoria crashes her car, Holliston pulls her out to finish her off, but paramedics intervene and discover the geriatric victim is in labor.