How about this one? Is it still available?
TUKO SA MADRE KAKAW (1958/LVN) Philippines.
Credits: Dir: Richard Abalardo.
Cast: Vic Diaz, Nita Javier, Willie Sotelo, Hector Reyes, Elena Balmori.
A mad scientist, (Diaz), plots to conquer the world by using a serum that can turn ordinary animals into giants.
Although i haven't seen it. My friends says it's a classic. Inspiration daw for Jurassic Park hehehe