CITES and the Regulation of International Wildlife Trade

Topic: Wildlife Trade Last updated: 2026-06-10

International wildlife trade is a multi-billion-dollar enterprise spanning live animals and plants and a vast array of derived products—from food and exotic pets to leather goods, timber, traditional medicines, and ornamental carvings. Left unmanaged, this trade is one of the principal drivers of biodiversity loss, capable of pushing heavily exploited species toward extinction within a human generation. The single most influential instrument for governing this trade is the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). For more than half a century CITES has functioned as the legal backbone of the global response to wildlife exploitation. This article surveys what CITES is, how it works, what it does well, and where its limitations lie—drawing on the scientific and policy literature throughout.

What CITES Is and How It Came About

CITES is an intergovernmental treaty whose stated aim is to ensure that international trade in specimens of wild animals and plants does not threaten the survival of the species involved [CITES Secretariat 2023]. Crucially, it is a trade convention, not a habitat-protection or anti-cruelty instrument: its jurisdiction begins at national borders. What a country permits within its own territory is governed by domestic law; CITES regulates the movement of specimens between states.

The Convention's origins lie in growing post-war alarm over the scale of commercial exploitation of wildlife. In 1963 the International Union for Conservation of Nature (IUCN) adopted a resolution calling for an international convention to regulate trade in wild species. A decade of negotiation followed. The text of the Convention was finally agreed and signed in Washington, D.C., on 3 March 1973 by representatives of 80 countries—hence CITES is sometimes called the "Washington Convention." It entered into force on 1 July 1975, once the required tenth instrument of ratification had been deposited [CITES Secretariat 2023].

CITES has since grown into one of the most widely subscribed conservation agreements in existence. As of 2024 it counts 183 Parties (182 states plus the European Union as a regional economic integration organization). The Convention is administered by the CITES Secretariat in Geneva, under the auspices of the United Nations Environment Programme, and its supreme decision-making body is the Conference of the Parties (CoP), which convenes roughly every three years.

The Three-Appendix Structure

CITES regulates trade by listing species in one of three Appendices, each carrying a different level of control [CITES Secretariat 2023]. The Appendix in which a species is placed determines the documentation required to move it across a border.

Appendix I covers species threatened with extinction that are or may be affected by trade. International commercial trade in wild-caught Appendix I specimens is essentially prohibited. Trade is allowed only in exceptional, non-commercial circumstances—scientific research, for instance—and requires both an export permit and an import permit, each issued only after stringent conditions are met. Iconic Appendix I species include the tiger (Panthera tigris), all rhinoceros species (with limited population-specific exceptions), the African forest elephant, the giant panda, most great apes, and sea turtles such as the hawksbill (Eretmochelys imbricata).

Appendix II is by far the largest category. It covers species not necessarily currently threatened with extinction but which may become so unless trade is strictly regulated, plus "look-alike" species listed to make enforcement of other listings practical. Commercial trade is permitted but controlled: an export permit (or re-export certificate) is required, and may be issued only if the exporting country's Scientific Authority has made a non-detriment finding (NDF)—a determination that the export will not be detrimental to the survival of the species in the wild. The American alligator, many corals, most parrots, mahogany, queen conch, and—following recent listings—dozens of shark and ray species fall under Appendix II.

Appendix III contains species that a single Party has chosen to protect within its own jurisdiction and for which it requests the cooperation of other Parties in controlling trade. Listing is unilateral rather than negotiated at a CoP. A specimen from the listing country requires an export permit; specimens from other countries require a certificate of origin. Examples include the walrus (listed by Canada) and various nationally protected mammals and birds.

How Listing Works

Amendments to Appendices I and II are decided at CoP meetings. Any Party may submit a listing proposal, which is then debated and put to a vote; adoption requires a two-thirds majority of Parties present and voting. Listing and delisting decisions are meant to be governed by biological and trade criteria set out in Resolution Conf. 9.24, which specifies thresholds relating to population size, decline, and the role of trade as a threat. In practice, listing decisions are also shaped by economic interests and regional politics, and the relationship between the formal criteria and actual outcomes has been a subject of ongoing scrutiny [Harfoot et al. 2018].

A distinctive feature of CITES is the reservation mechanism. A Party that disagrees with a listing may enter a formal reservation, in which case it is treated as a non-Party with respect to trade in that species—effectively opting out of the new control. Reservations have been used, controversially, for commercially valuable taxa such as certain whales and sharks, and they illustrate the consensual, sovereignty-respecting nature of the regime: CITES cannot bind an unwilling Party against its will.

The Permitting System and the Trade Database

The operational core of CITES is its permit system. Every Party must designate a Management Authority (which issues permits and certificates) and a Scientific Authority (which advises on non-detriment findings). Legal international trade in a listed specimen must be accompanied by the appropriate document, surrendered or recorded at the point of import and export. Parties are obliged to submit annual reports of their trade to the Secretariat.

These reports are compiled into the CITES Trade Database, maintained by the UN Environment Programme World Conservation Monitoring Centre, which now holds well over 20 million trade records stretching back to 1975. The database is the most comprehensive long-term record of legal wildlife trade in existence and an indispensable research resource. A landmark analysis of four decades of these records found that the trade is enormous in both volume and taxonomic breadth, dominated numerically by a relatively small number of high-volume commodities, and that reported trade has generally increased over time even as its composition has shifted [Harfoot et al. 2018]. The same work highlighted a persistent caveat: reporting is uneven, units are inconsistent, and discrepancies between exporter- and importer-reported figures are common, so database totals must be interpreted with care.

Enforcement: What CITES Does—and Does Not—Do

A frequent misunderstanding is that CITES is an enforcement agency. It is not. CITES has no police force, no inspectors at borders, and no power to prosecute. The Secretariat can offer guidance, review compliance, and—as a last resort—recommend that Parties suspend trade with a non-compliant country, but the actual work of inspecting shipments, seizing contraband, and prosecuting offenders falls entirely to national authorities operating under domestic law. CITES sets the rules; member states enforce them, with widely varying capacity and political will.

Several institutions support enforcement in practice. TRAFFIC, the wildlife-trade monitoring network established jointly by IUCN and WWF, analyzes trade data and seizures and supplies much of the evidence base used by Parties. The International Consortium on Combating Wildlife Crime (ICCWC)—which brings together the CITES Secretariat, INTERPOL, the UN Office on Drugs and Crime (UNODC), the World Customs Organization, and the World Bank—coordinates operational support. On the ground, enforcement increasingly relies on risk-based container profiling and scanning at major ports, since the overwhelming majority of high-value contraband (ivory, pangolin scales, timber) moves in maritime shipping containers where physical inspection of every consignment is impossible.

The Scale of Illegal Wildlife Trade

Alongside the legal trade that CITES regulates runs a large and damaging illicit trade. Estimates of its value are necessarily imprecise, but credible analyses place it in the range of roughly US$7–23 billion per year, making wildlife trafficking commonly cited as the fourth most lucrative category of transnational organized crime, after drugs, counterfeiting, and human trafficking [UNODC 2020]. UNODC's World Wildlife Crime Report 2020 documents the diversity of trafficked commodities—pangolins (the most heavily trafficked wild mammal), rosewood, ivory, rhino horn, reptiles, big-cat parts, and live birds and reptiles for the pet trade—and emphasizes that trafficking is run by organized criminal networks exploiting the same logistics and corruption channels as other illicit commodities [UNODC 2020].

What drives this trade is demand: for status goods and traditional medicines, for exotic pets, for luxury timber and seafood, and for bushmeat. A central insight of the conservation-policy literature is that poaching and trafficking are not purely enforcement failures but symptoms of demand, poverty, governance gaps, and incentive structures [Challender & MacMillan 2014]. Challender and MacMillan argue that the dominant "war on poaching" framing—more rangers, more arrests, more seizures—addresses the supply side while leaving the underlying economics of demand largely untouched, and that durable solutions require attention to consumer behavior, local livelihoods, and the legitimacy of conservation institutions in the eyes of the people who live alongside wildlife [Challender & MacMillan 2014].

Controversies

CITES sits at the intersection of conservation science, economics, animal welfare, and national sovereignty, and several of its decisions remain deeply contested.

The Ivory Debate

No CITES issue has generated more controversy than ivory. The African elephant was listed on Appendix I in 1989, instituting a global ban on commercial ivory trade that is widely credited with reducing poaching in the years that followed. CITES subsequently authorized two "one-off" sales of stockpiled ivory: about 50 tonnes from Botswana, Namibia, and Zimbabwe to Japan in 1999, and roughly 108 tonnes from four southern African states to China and Japan in 2008. Proponents argued that controlled legal supply would satisfy demand and depress poaching; critics warned of the opposite. The empirical record has largely vindicated the critics. An influential econometric analysis found that the 2008 sale was associated with an abrupt and substantial increase in elephant poaching and illegal ivory production—on the order of a two-thirds rise—rather than the predicted relief. This outcome is precisely what some researchers had cautioned in advance: legal sales can stimulate rather than satisfy demand, expand markets, and create cover under which illicit product can be laundered [Rivalan et al. 2007]. The ivory case has become the paradigmatic example of why legalizing trade in a high-value commodity is risky when monitoring and enforcement are weak.

Trophy Hunting

Trophy hunting of CITES-listed species—lions, leopards, elephants, and rhinos in particular—is permitted under specific conditions and divides the conservation community sharply. Advocates contend that well-regulated hunting generates revenue that funds habitat protection and gives local communities a financial stake in keeping wildlife and its habitat intact. Opponents raise ethical objections and question whether revenues actually reach communities or translate into conservation gains, and whether quotas are set on a sound scientific basis. CITES generally treats hunting trophies as a regulated, non-detriment-finding-dependent form of trade rather than banning it outright, reflecting a pragmatic, use-based philosophy.

Timber and Marine Species

For much of its history CITES focused on charismatic terrestrial vertebrates. More recently it has extended into commercially traded timber (rosewoods, mahogany, agarwood) and commercially fished marine species (sharks, rays, sea cucumbers, queen conch, eels). These extensions are contentious because the volumes are huge, the species are economically important to fishing and forestry industries, and existing sectoral bodies—regional fisheries management organizations, for instance—have historically claimed primacy. Making non-detriment findings for wide-ranging, data-poor marine species is scientifically demanding, and implementing fin- and meat-level controls at scale strains customs capacity.

How Legal and Illegal Trade Interact

A recurring theme across these controversies is the porous boundary between legal and illegal trade. Legal trade does not exist in isolation from the black market; under certain conditions it can actively facilitate it. Where a legal market exists for a product that is visually indistinguishable from its illegal counterpart—ivory, rhino horn, reptile skins, timber—illegally sourced specimens can be laundered into the legal supply chain using forged or recycled permits, mis-declared species names, or "captive-bred" claims for wild-caught animals. Legal supply can also normalize consumption, sustaining or expanding the very demand that ultimately fuels poaching [Rivalan et al. 2007; Challender & MacMillan 2014]. This dynamic is the strongest argument made by those who favor strict prohibition over regulated trade for the most vulnerable, high-value taxa. The counter-argument—that prohibition pushes trade underground, forgoes revenue for conservation, and criminalizes subsistence users—keeps the legal-versus-prohibition debate unresolved and highly species-specific.

Recent Milestones

CoP19 (Panama City, 2022) was a landmark for marine and amphibian conservation. Parties adopted 46 of 52 listing proposals, bringing more than 500 new species under CITES control. The headline outcomes were the Appendix II listing of some 54 species of requiem sharks, six species of hammerhead sharks, and 37 species of guitarfish (a group of rays)—a decision that for the first time brought the bulk of the commercially fished shark-fin trade under CITES regulation—and the listing of the entire glass frog family (Centrolenidae) on Appendix II to control a growing exotic-pet trade. The shark listings were widely described as transformative given that international fin demand had driven steep declines across many of the affected species.

CoP20 (Samarkand, Uzbekistan, 2025) continued this trajectory. The conference drew nearly 3,500 participants, reviewed 50 listing proposals, and adopted more than 350 decisions, resulting in roughly 77 new species being added to the Appendices. Among the most significant outcomes were further uplistings of sharks and rays—including oceanic whitetip sharks, whale sharks, and all manta and devil rays to Appendix I, prohibiting their commercial trade outright—alongside strengthened protections for the okapi, Galápagos iguanas, and a range of geckos and other reptiles heavily affected by the pet trade. The meeting also produced the Samarkand Declaration on Central Asian regional cooperation against wildlife crime, and Parties agreed that CoP21 will be hosted by Panama in 2028.

Beyond CITES: Complementary Instruments

CITES is necessary but not sufficient, and it operates within a wider architecture of law and policy. Because trafficking is organized crime, the United Nations Convention against Transnational Organized Crime (UNTOC) is increasingly invoked to treat serious wildlife offenses as predicate crimes—unlocking tools for money-laundering investigations, asset forfeiture, and international mutual legal assistance that CITES itself lacks [UNODC 2020]. At the national level, domestic statutes function as the actual enforcement engine: the United States' Endangered Species Act and Lacey Act, the European Union's Wildlife Trade Regulations, and analogous laws elsewhere implement and often exceed CITES obligations. Bilateral and regional agreements—on shared fisheries, transboundary protected areas, and demand-reduction cooperation between source and consumer states—fill further gaps. And non-governmental monitoring by TRAFFIC and others supplies the evidence that makes the whole system auditable. CITES is best understood not as a stand-alone solution but as the legal scaffolding around which this broader effort is organized.

Conclusion

After fifty years, CITES remains the indispensable framework for governing the global wildlife trade. Its achievements are real: a near-universal membership, a common permitting language understood at every border, the most complete record of legal trade ever assembled, and a steady expansion of protection to sharks, timber, reptiles, and amphibians that earlier generations of the Convention overlooked. Its limitations are equally real: it has no enforcement arm of its own, it depends on the uneven capacity and political will of its Parties, its listing decisions are shaped by economics and politics as much as by biology, and—as the ivory experience shows—its experiments with regulated trade can backfire badly when monitoring is weak. The most credible reading of the evidence is that CITES is a powerful but partial tool, most effective when paired with demand reduction, strong national enforcement, attention to the livelihoods of people who live with wildlife, and the criminal-justice instruments that treat trafficking as the serious organized crime it has become [Challender & MacMillan 2014; UNODC 2020; Harfoot et al. 2018].

References

CITES Secretariat (2023). CITES Appendices I, II and III. Convention on International Trade in Endangered Species of Wild Fauna and Flora. https://cites.org/eng/app/appendices.php

Challender, D. W. S., & MacMillan, D. C. (2014). Poaching is more than an enforcement problem. Conservation Letters, 7(5), 484–494. https://doi.org/10.1111/conl.12082

Harfoot, M., Glaser, S. A. M., Tittensor, D. P., Britten, G. L., McLardy, C., Malsch, K., & Burgess, N. D. (2018). Unveiling the patterns and trends in 40 years of global trade in CITES-listed wildlife. Biological Conservation, 223, 47–57. https://doi.org/10.1016/j.biocon.2018.04.017

Rivalan, P., Delmas, V., Angulo, E., Bull, L. S., Hall, R. J., Courchamp, F., Rosser, A. M., & Leader-Williams, N. (2007). Can bans stimulate wildlife trade? Nature, 447(7144), 529–530. https://doi.org/10.1038/447529a

UNODC (2020). World Wildlife Crime Report 2020: Trafficking in Protected Species. United Nations Office on Drugs and Crime, Vienna.