10/12/2026
š
š Primate trade: hundreds of endangered macaques flown from Vietnam to the U.S. for toxicity testing
A cargo plane operated by SkyTaxi, an airline based in Poland, landed at Washington Dulles International Airport in the state of Virginia, near Washington, D.C. (United States). According to primate protection organizations, hundreds of long-tailed macaques from Vietnam were on board, confined in transport crates during a long intercontinental flight.
Their destination is not a sanctuary. According to these organizations, the animals are bound for the toxicity testing industry, where drugs and chemicals are tested for safety. They also note that shipments recently arrived from Mauritius, an island nation in the Indian Ocean, and from Cambodia.
The long-tailed macaque has been listed as Endangered on the IUCN Red List since 2022. In 2025, the organization upheld that status despite objections from the biomedical industry: its populations have declined by at least half in about three decades.
The United States is the worldās largest importer, bringing in more than 30,000 of these primates every year. Even so, this year the U.S. Fish and Wildlife Service once again declined to protect them under the Endangered Species Act.
Behind this trade lies a troubling record. In 2022, U.S. authorities charged representatives of a Cambodian monkey-breeding company and two Cambodian officials with allegedly passing off wild-caught monkeys as captive-bred. A 2025 study indicates that wild-caught animals are likely still entering breeding farms in Cambodia, Laos and Vietnam. And in January 2026, Charles River Laboratories, one of the industryās largest companies, announced the purchase of a breeding farm in Cambodia for about $510 million.
Each macaque is a sentient being who lives in family groups, who feels fear and suffers in confinement. None of them chose to board that plane.