Conquest of the Planet of the Apes (1972)

Building upon the description given by Cornelius and Zira before the Presidential committee in the previous film, a terrible disease has killed off the world's cats and dogs leaving humans with no animals to keep as pets except apes. These apes have been taught to perform menial tasks such as sweeping the streets. One ape, Caesar (the son of Cornelius and Zira), initiates a revolt against the apes' human masters.

Conquest of the Planet of the Apes is the third sequel to the 1968 sci-fi film Planet of the Apes. It continues the exploration of the future history of mankind set out in the previous film, Escape from the Planet of the Apes and sometimes considered the most violent and dark of the Ape sequels.