Embryo (1976 film)

Embryo is a 1976 science fiction horror film directed by Ralph Nelson and starring Rock Hudson alongside Barbara Carrera, with a cameo appearance by Roddy McDowall. It deals with the mental and physical consequences of growing a human embryo in an artificial uterus.

One night, Holliston runs over a pregnant doberman dog. The dog is fatally injured, but Holliston manages to save one of her unborn puppies by gestating it in an artificial uterus. Because the device still requires nutrients to be supplied by the mother, he must drastically shorten the gestation period to this end, he uses an experimental growth hormone made from human placental lactogen, which speeds up the embryos growth.The doberman grows to adult size in a few days, and Holliston passes it off as the mother to disguise his secret experiments. Thanks to the serum, it learns incredibly fast and soon becomes as good as a welltrained dog. However, Holliston fails to notice that the animals aggression is increasing commensurately while he is out on an errand, it kills an annoying small dog and conceals the carcass. ........

Source: Wikipedia