Dr. Jekyll y el Hombre Lobo

Dr. Jekyll y el Hombre Lobo Dr. Jekyll and the Wolfman, also known as Dr. Jekyll and the Werewolf, is a 1971 Spanish horror film, the sixth in the series, about the werewolf Count Waldemar Daninsky, played by Paul Naschy. It was followed by a sequel, El retorno de Walpurgis.

Source: Wikipedia