Well, that depends on where you are and what you mean by "exotic". If you were in Southeast Asia (where this species lives) then technically, they would not be "exotic". But using "exotic" the way most people mean it when it comes to pets, then yes, Macaca fascicularis would be considered an "exotic" pet, in that this species has never been domesticated (nor has any other primate species). Whereas domesticated species such as cats and dogs have evolved for thousands of years alongside humans, and can thrive in domestic settings, monkeys have not and can not. Nevertheless, some people insist on keeping them as pets, which usually involves removing infants from their mothers and rearing them in total isolation from others of their own kind (which is known to cause serious psychological damage, and even to hinder proper development). These owners often believe that they can take good care of their pet monkeys by considering them to be their "babies" or "one of the family" - unfortunately good intentions can not change the fact that life as a pet is entirely inappropriate for any monkey, and to keep one is to directly cause a lot of avoidable suffering.

Is Macaca fascicularis or long-tailed monkey considered as exotic pets? If yes, could you please help me search for official sources about it? I really need opinions from people who understands about primates and wildlife. Thanks a lot! :)