"In Terror Creatures, when I needed a jumping heart, I prepared the effect myself without the aid of any specialist. First I bought a pig's heart and a Japanese toy for a dollar. It was a little doll with a rubber ball hand-pump connected to it. When you squeezed the rubber ball, the doll jumped. I inserted this mechanism into the pig heart and it worked perfectly. Thump, thump, thump. The heart would beat perfectly as soon as you squeezed the pump."
In an article in the third Shock Xpress book, movie journalist Lucas Balbo interviews director Massimo Pupillo. These are some movies mentioned in the article.
L'Amore Primitivo (Luigi Scattini, 1964)
5 Tombe Per Un Medium (Massimo Pupillo, 1965)