Going Ape (1981)

When his father who owned a circus dies Oscar inherits 5 million dollars and 3 orangutans However theres a condition connected to the money if he gives away the apes or just one gets sick or dies during the next 3 years the zoologic society will get all the money So he not only has to deal with 3 apes and an annoyed girlfriend but also with a greedy zoologic societys president