Gappa the Triphibian Monster (1967)

Storyline:

Gappa the Triphibian Monster 1967 An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa An earthquake opens up an underground cavern and a baby reptile is discovered inside The natives warn the foreigners to leave the hatching alone, but they dont listen and take it back to a zoo in Japan Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child