What is the most annoying animal in the zoo?

The answer is orangutan, because it knocks on the chest.

Scientists believe that gorillas use these chest slaps as a way of nonverbal communication to attract women and intimidate potential competitors. This chest bump has both sound elements and visual elements. If it is done by a male gorilla, it can be heard 0.62 miles (1 km) away. Young male gorillas may also practice and get feedback from the group.

Chimpanzees are 70-83 cm long and weigh 30-45 kg. Similar in appearance to chimpanzees, but more upright, docile, less angry, less noisy and more peaceful than chimpanzees. They use frequent and casual life to deal with contradictions and solve social problems.

They like to live in tropical rain forests and live in groups, with 2-20 animals in each group, led by 1 adult female. They eat a lot, such as fruits, leaves, roots, flowers, seeds and bark. Some often eat insects, eggs or catch young antelopes, baboons and monkeys. Bonobos, found in the south of Congo River in Africa, are endangered animals.