Monkeys and great apes are some of the most distinct animals on Earth. From their arboreal homes to their antics resembling humans, these animals are precious and unique. And here we mention 8 monkeys and great apes that make the loudest and weirdest sounds and calls.Monkeys and great apes are some of the most distinct animals on Earth. From their arboreal homes to their antics resembling humans, these animals are precious and unique. And here we mention 8 monkeys and great apes that make the loudest and weirdest sounds and calls.