Missouri is one of the more permissive states when it comes to exotic animals on paper, but that does not mean you can simply bring a monkey home without serious legal groundwork. The state’s framework for primate ownership is a layered mix of state statute, wildlife code regulations, local ordinances, and federal law — and getting any one layer wrong can result in fines, criminal charges, or the loss of the animal.
Whether you are genuinely considering a primate or just want to understand where Missouri stands, this guide walks through every legal dimension of monkey ownership in the state, from which species are affected to what violations actually cost you.
Important Note: This article is for informational purposes only and does not constitute legal advice. Laws can change and local ordinances vary widely. Always consult the Missouri Department of Conservation and a qualified attorney before acquiring any primate.
Is It Legal to Own a Monkey in Missouri
The short answer is: it depends on the species, and it always requires registration or permitting. Missouri law states that no person may keep any nonhuman primate — along with lions, tigers, bears, wolves, and other dangerous wild animals — in any place other than a properly maintained zoological park, circus, scientific or educational institution, research laboratory, veterinary hospital, or animal refuge, unless that person has registered the animal with the local law enforcement agency in the county where the animal is kept.
This means private monkey ownership is not outright banned at the state level for most species — but it is heavily conditioned. Owning a monkey in Missouri is generally illegal without proper permits, and the state has strict laws regulating exotic animals to protect public safety and animal welfare. The registration requirement under RSMo 578.023 is the baseline, but it is not the only legal hurdle you face.
There is no federal law against private ownership of primates, but endangered species like spider monkeys are illegal to own under the Endangered Species Act. That federal layer sits on top of whatever Missouri requires, meaning even a properly registered animal could still be illegal to possess if the species carries federal protections.
Key Insight: Missouri’s dangerous wild animal law does not ban private primate ownership outright — but it does require county-level registration, and separate state wildlife code provisions and federal law add additional restrictions depending on the species.
Which Monkey Species Are Allowed or Banned in Missouri
Missouri draws a meaningful legal distinction between great apes and smaller monkeys, and between species that are federally protected and those that are not. Understanding those distinctions matters before you research any specific animal.
Great Apes (Gorillas, Chimpanzees, Orangutans, Bonobos, Gibbons)
Under Missouri law, all gorillas, chimpanzees, orangutans, bonobos, and gibbons are classified as “dangerous wild animals.” Because of their status as dangerous wild animals, some apes — except those in zoos, circuses, research facilities, and animal refuges — must be registered with the local law enforcement agency of the county in which they reside.
Although the dangerous wild animal law does not actually restrict the possession or use of apes in Missouri, the state’s Wildlife and Forestry Law does. Under that law, it is illegal to import, transport, or sell endangered or threatened animals, including all species of apes, without a permit issued by the U.S. Fish and Wildlife Service. In practical terms, this makes acquiring a great ape for private ownership extremely difficult.
Smaller Monkeys (Capuchins, Marmosets, Macaques, and Others)
Smaller monkey species — such as capuchins, marmosets, tamarins, and squirrel monkeys — fall under the same “nonhuman primate” classification in RSMo 578.023 and therefore require county registration. Monkeys are classified as exotic or wild animals under Missouri law, requiring special permits for ownership. The state prohibits owning certain species of monkeys without a license from the Missouri Department of Conservation.
Federally Protected Species
Spider monkeys, for example, are illegal to own under the Endangered Species Act regardless of what Missouri’s state law might otherwise permit. If a species appears on the federal endangered or threatened list, no state-level registration process makes private ownership legal. You can learn more about spider monkey species and why they are particularly protected under federal wildlife law.
If you are interested in smaller primates as pets, reviewing the small monkey breeds that people commonly consider — alongside their individual legal status — is a useful starting point before approaching any regulatory agency.
Permit and License Requirements for Monkey Ownership in Missouri
Missouri’s permitting landscape for primates involves multiple agencies and layers of compliance. There is no single “monkey permit” you can simply apply for — the requirements depend on what you intend to do with the animal and which agency has jurisdiction over that activity.
County-Level Registration (RSMo 578.023)
The most direct requirement for private owners is registration with the local sheriff’s office or law enforcement agency in the county where the animal will be kept. Per Missouri State Statute 578.023, no person may keep a nonhuman primate outside of an approved institutional setting unless that person has registered the animal with local law enforcement. Cole County, for example, asks any resident who keeps such an animal to contact the Sheriff’s Office so the animal can be added to the county registry.
Missouri Department of Conservation Permits
Missouri requires a special permit from the Missouri Department of Conservation to keep monkeys legally. Applicants must prove they have adequate facilities and knowledge to care for the monkey safely. Permits are usually issued for zoos, research institutions, or educational facilities rather than private homes. Renewal of permits involves inspections and compliance with animal welfare standards.
The Wildlife Code of Missouri, under 3 CSR 10-4.117, also establishes a list of prohibited species. The Wildlife Code of Missouri, Division 10, Chapter 4 establishes prohibited species which may not be imported, exported, transported, sold, purchased, or possessed alive in Missouri without written approval of the director.
Missouri Department of Agriculture Requirements
The Missouri Department of Agriculture requires that all exotic animals entering the state, or transported or exhibited within the state, be accompanied by a certificate of veterinary inspection confirming that the animals are free from infectious disease. This requirement applies when you bring a monkey into Missouri from another state.
Federal Permits
If the species you are considering is listed as endangered or threatened, you will also need a permit from the U.S. Fish and Wildlife Service before any import, transport, or sale can legally occur. Federal regulations set minimum standards for the handling, feeding, housing, and maintenance of apes possessed for exhibition and other commercial purposes or for scientific research. Those federal standards do not apply to apes possessed as pets, in private collections, or in sanctuaries that are not open to the public.
Pro Tip: Contact the Missouri Department of Conservation’s regional office before acquiring any primate. The agency can clarify which permits apply to your specific situation and whether the species you are considering is on the prohibited species list under 3 CSR 10-4.117.
Local Laws That May Still Apply in Missouri
State law sets a floor, not a ceiling. Even if you satisfy every state-level requirement, your city or county may independently prohibit primate ownership — or impose additional conditions that go beyond what the state requires.
Just because an animal is legal to own at the state level does not mean the city you live in allows it. Many local cities and counties have their own restrictions on which animals are legal to keep. You should check with your local city and/or county for their regulations regarding what pets you can and cannot own.
Missouri has a well-documented history of local ape and primate ordinances. A partial list of examples illustrates how varied these local rules can be:
- In Arnold, it is illegal to keep any ape as a pet or for display or exhibition purposes. The ban does not apply to zoos, circuses, performing animal exhibitions, and veterinary care facilities.
- In Riverside, it is illegal to keep, harbor, own, or possess any great ape within the city limits.
- In Ashland, great apes are classified as dangerous exotic animals and may not be owned, possessed, or sold without all relevant local, state, and federal permits. If an ape is not required to be licensed by any government agency, the Health Director is responsible for regulating and monitoring its possession.
- In Ballwin, any person wishing to import, buy, sell, or possess any great ape must secure a local permit, carry liability insurance, and comply with local regulations.
- In Boone County, great apes are classified as dangerous exotic animals and may not be owned, possessed, or sold without all relevant local, state, and federal permits. If an ape is not required to be licensed by any government agency, the county Health Department is responsible for regulating, permitting, inspecting, and monitoring its possession.
- In Branson, it is illegal to keep, harbor, own, or transport any great ape within the city limits.
This list is not exhaustive — it is a partial list of local laws that demonstrates how some towns, cities, and counties in Missouri have addressed the issue. Cities not listed here may have their own ordinances. It is your responsibility to comply with all local laws, ordinances, and covenants before importing or possessing live wildlife.
Missouri is home to a wide range of wildlife, and local ordinances often reflect community-level concerns about public safety and the protection of native species. You can explore other native Missouri wildlife covered on this site, including snakes, lizards, and salamanders.
Where You Can Legally Buy a Monkey in Missouri
If you have confirmed that your county and city permit primate ownership, and you have secured the necessary state registrations and permits, the next question is where to source the animal legally. This step carries its own legal and ethical weight.
Buying monkeys from unlicensed sellers or online can support illegal wildlife trade and harm animals. Missouri does have a history of captive wildlife sales. Russian antelope, pygmy hippos, Congo buffaloes, parrots, all types of monkeys, and 30 to 40 different types of peacock have been offered for sale at exotic animal auctions in Missouri over the years. However, the presence of an animal at an auction does not mean the sale is legal for a private buyer without the correct permits already in hand.
You must have your permit in hand for the animal you wish to purchase at an exotic or alternative sale. Arriving at a sale without the proper documentation and then acquiring a primate puts you in immediate violation of state law.
Legally sourced primates typically come from:
- USDA-licensed breeders who are registered with federal authorities and can provide health documentation
- Accredited facilities that are reducing their collections and rehoming animals through proper channels
- Primate sanctuaries that occasionally place animals in approved, permitted settings
Although experts warn against owning primates and other exotic animals, they encourage those seeking them out to go to a legitimate and humane source. They also encourage consumers to avoid endangered species and to research thoroughly, because most people do not see all of the trauma those individuals go through in order to end up as someone’s pet.
There is no statewide registry of pet primates in Missouri, which means enforcement is uneven and the market for illegally sourced animals exists. Purchasing from an unverified source does not reduce your legal exposure — it increases it.
Health documentation is also mandatory when bringing an animal across state lines. All exotic animals must be free of clinical signs of any infectious or contagious disease, and a Certificate of Veterinary Inspection is required showing an individual listing of the scientific and/or common name of the animal along with appropriate descriptions such as sex, age, weight, and coloration. You can read more about the disease risks associated with primates, including monkeypox, which underscores why health certification requirements exist.
What It Actually Costs to Own a Monkey in Missouri
The financial commitment of primate ownership extends far beyond the purchase price. Missouri residents considering a monkey should budget across several categories, each of which carries ongoing costs for the life of the animal — which can span several decades.
Purchase Price
When buying a monkey from a breeder, the cost can range from $1,500 to over $60,000, depending on species, age, and temperament. Pet-quality capuchins from breeders typically range from $3,000 to $10,000, varying by age, training, and lineage. Rarer or more sought-after species command significantly higher prices.
Initial Setup Costs
In addition to the monkey itself, you will need to buy a number of initial setup items and supplies, including the cage, habitat, food, diapers, and initial veterinary care. Expect to pay quite a lot for all of these items — the cage itself should cost over $1,000. An indoor enclosure or room retrofit typically runs $1,500 to $6,000 for heavy-duty caging, climbing structures, and secure doors, with furniture, perches, branches, ropes, and toys adding another $300 to $1,000.
Ongoing Monthly Costs
Ongoing care typically costs between $200 and $1,000 monthly for years to come, depending on the species. Food alone is a significant line item: depending on the monkey’s species, age, and size, the food bill could range between $100 and $1,000 per month. Smaller monkeys only need small amounts of food, fruits, and vegetables, with the food bill adding up to about $100 per month for smaller species.
| Cost Category | Estimated Range | Notes |
|---|---|---|
| Purchase price | $1,500 – $60,000+ | Varies widely by species and age |
| Initial enclosure setup | $1,500 – $6,000+ | Must be species-appropriate and secure |
| Initial vet exam and bloodwork | $300 – $900 | Requires a primate-specialist vet |
| Monthly food | $100 – $1,000 | Depends on species size and diet |
| Annual routine vet care | $300 – $1,000 | Exams, vaccines, parasite checks |
| Emergency medical fund | $1,000 – $5,000+ per year | Exotic vet bills can be substantial |
| Pet insurance | ~$50/month and up | Species and state of residency affect cost |
| Permits and compliance | $0 – $1,000+ per year | Varies by county and permit type |
| Enrichment and toys | $200 – $800/year | Ongoing replacement required |
Veterinary Care
Most veterinarians do not accept monkeys as patients, so you will have to go to a specialized expert. This can cost hundreds if not thousands of dollars per visit. Finding a primate-experienced vet in Missouri can be challenging, particularly outside of the Kansas City and St. Louis metro areas. Monkeys can transmit zoonotic diseases like herpes B virus, which can be fatal to humans, making regular veterinary oversight not just expensive but genuinely important for your household’s safety.
Lifespan Commitment
Capuchin monkeys have a lifespan of generally around 40 years, so owning one is a lifetime commitment. Estimated ongoing annual costs total $2,500 to $10,000 or more, with higher costs in years when emergencies occur. That is a financial and caregiving commitment that extends well beyond most conventional pets.
Common Mistake: Many prospective owners focus on the purchase price and overlook the cost of a proper enclosure, a primate-specialist vet, and the decades of ongoing care. Budget conservatively for all categories before making any decisions.
Penalties for Illegally Owning a Monkey in Missouri
Missouri takes violations of its exotic animal statutes seriously, and the consequences of non-compliance reach across criminal, civil, and animal welfare dimensions.
Criminal Penalties Under RSMo 578.023
Missouri law defines keeping a dangerous wild animal — including any nonhuman primate — outside of an approved facility or without county registration as a criminal offense. Violation is a class C misdemeanor. A class C misdemeanor in Missouri can carry a fine of up to $750. While that may sound modest, it is typically just the beginning of the consequences an illegal owner faces.
Animal Confiscation
Violating exotic animal laws can lead to fines, animal confiscation, and criminal charges. Missouri conservation officers conduct inspections and respond to reports of illegal exotic animal ownership. Illegal possession of monkeys can result in confiscation, fines, and criminal charges. When an animal is confiscated, the owner typically bears the cost of housing and care during any legal proceedings — which can be substantial for a primate.
Federal Penalties
If the species you possess is protected under the Endangered Species Act, federal penalties apply in addition to state ones. The state’s Wildlife and Forestry Law makes it illegal to import, transport, or sell endangered or threatened animals — including all species of apes — without a permit issued by the U.S. Fish and Wildlife Service. Federal wildlife violations can result in significant fines and potential imprisonment depending on the circumstances.
Local Ordinance Violations
Cities and counties that independently ban primate ownership can impose their own penalties on top of state consequences. In municipalities like Riverside, Branson, or Boonville — where great apes are outright prohibited — possession is a local offense that can result in additional fines and mandatory removal of the animal regardless of any state-level registration you may hold.
The Broader Risk Picture
While monkeys and apes can be very sweet and mild-tempered in their infancy, experts warn that they are still wild animals and that their behavior can change drastically as they get older. Even small spider monkeys can get bigger, more aggressive, and sometimes sexually aggressive. Their teeth, claws, and physical strength can lead to injuries, and zoonotic diseases are a significant concern. If a monkey injures someone, the legal and civil liability for an unregistered or illegally owned animal is considerably greater than for a properly permitted one.
Missouri has an active wildlife enforcement presence, and the state actively enforces exotic animal laws to protect public safety and animal welfare, and authorities investigate illegal monkey ownership seriously. The combination of criminal exposure, potential federal violations, civil liability, and the near-certain loss of the animal makes illegal ownership a high-risk path with very little upside.
If you are drawn to Missouri’s wildlife more broadly, the state has an extraordinary range of native species worth exploring — from eagles and hummingbirds to butterflies and water birds — none of which require a permit to observe and appreciate.