Illegal wildlife traffickers provide fake credentials to establish that primates are being legitimately offered for sale. Their ads claim that the primate comes with "veterinary health documents, a "permit" from CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) and a year's health care guarantee. This is totally fraudulent, however, because CITES bans international trade and does not issues such permits.
And let's not even talk about all the internet sales of trophies and animal parts.
Just another threat to already endangered primates.