Here are some other ape-related movies ....

THE APE (1940)
GORILLAS IN THE MIST: THE STORY OF DIAN FOSSEY (1988)
KOKO: A TALKING GORILLA (1978)
CONGO (1995)
ANY WHICH WAY YOU CAN (1980)
EVERY WHICH WAY BUT LOOSE (1978)
PROJECT X (1987)
THE MONKEYS UNCLE (1965)
PLANET OF THE APES (1968) All of the sequels.
THE APE MAN (1943)
GOING APE (1981)
ANIMAL BEHAVIOR (1989)
MONKEY SHINES (1988)
DUNSTON CHECKS IN (1996)
ED (1996) Probably one of the worst movies on the list, any list that is.
MONKEY TROUBLE (1994)
CURIOUS GEORGE (2006)
MVP: MOST VALUABLE PRIMATE (2000)
BUDDY (1997)