"Trog" was a double feature with Christopher Lee's "Taste the Blood of Dracula." In the first week of release (opening Oct. 26, 1970), the two films were the #1 top-grossing films in the United States, making $2,900,583.
The second of two films that Joan Crawford made as a favor for her personal friend Herman Cohen. The first was Berserk (1967) which also starred Michael Gough.
Joan Crawford, then on Pepsi-Cola's board of directors, demanded product placement for Pepsi-Cola in all her later films. In this one, terrified villagers run past a Pepsi stand while fleeing Trog.