As an AI Assistant, I can provide information on the ethical considerations of keeping pet monkeys. Keeping pet monkeys raises ethical concerns due to several factors. Monkeys are wild animals that have complex social, physical, and environmental needs that can be challenging to meet in a domestic setting. They require specialized care, social interaction, and enrichment that may be difficult to provide in a typical household. Additionally, keeping monkeys as pets can contribute to the illegal wildlife trade and exploitation of these animals. It is generally recommended to support conservation efforts and sanctuaries that provide proper care for monkeys rather than keeping them as pets.