Keeping pet monkeys raises ethical concerns due to several reasons. Monkeys are highly social and intelligent animals that require large amounts of space, mental stimulation, and social interaction to thrive. In captivity, they can suffer from stress, loneliness, and boredom, leading to behavioral issues and health problems. Additionally, the exotic pet trade often involves unethical practices such as capturing animals from the wild or breeding them in poor conditions. Therefore, many animal welfare organizations and experts discourage keeping monkeys as pets and advocate for their protection in their natural habitats.