Endangered Animals in Wyoming: What the Law Says and What You Need to Know

Wyoming may be one of the least densely populated states in the country, but its open landscapes, river systems, and high-elevation ecosystems shelter some of the most legally protected wildlife in North America. Over 800 species of wildlife exist in Wyoming, and a meaningful number of them carry federal or state-level protections that come with real legal consequences.

Whether you’re a landowner, hunter, hiker, or simply someone who spends time outdoors in the Cowboy State, knowing which animals are protected — and what the law says about interacting with them — is not optional. Violations can result in steep fines, criminal charges, and civil liability. This guide breaks down everything you need to know about endangered animals in Wyoming, from how species get listed to what happens if you harm one.

Key Insight: The Endangered Species Act applies to everyone in Wyoming — on public land, private land, and anywhere in between. Ignorance of the law is not a legal defense.

How Endangered Species Are Listed and Protected in Wyoming

The federal Endangered Species Act (ESA) of 1973 provides for the identification, listing, and protection of both threatened and endangered species and their habitats. The law was designed to prevent the extinction of vulnerable plant and animal species through the development of recovery plans and the protection of critical habitats.

ESA administration and enforcement are the responsibility of the U.S. Fish and Wildlife Service and the National Marine Fisheries Service. In Wyoming, the day-to-day implementation of these protections falls under the Wyoming Ecological Services Field Office, which oversees species monitoring, recovery planning, and regulatory consultation.

Protection under the ESA extends to endangered (E), threatened (T), experimental populations (EXP), proposed (P) and candidate (C) species. Each designation carries a different level of legal protection, with “endangered” representing the highest risk of extinction and the strongest legal safeguards.

The listing process begins with a petition, followed by a scientific review, a proposed rule, and a public comment period. Once a plant or animal meets its recovery goal, the Fish and Wildlife Service will propose delisting the species, work with states on local management programs, and go back to the public for comment. For others, like the gray wolf or grizzly bear, the delisting process can spend years tied up in court. Once a species is delisted, the states manage it as they would any other non-threatened plant or animal.

In addition to addressing ESA-listed species, the Wyoming Ecological Services Field Office supports the development and implementation of State wildlife action plans. State wildlife action plans outline the steps that are needed to conserve wildlife and its habitat before species become scarce and costly to protect.

Important Note: Candidate species — those under review for potential listing — do not yet receive full ESA protection, but conservation measures for them are strongly recommended by the USFWS.

Federally Listed vs. State-Listed Endangered Animals in Wyoming

When it comes to endangered species in Wyoming, you’re dealing with two overlapping layers of protection: federal law and state law. Understanding the difference matters because each layer can impose separate obligations and penalties.

The Wyoming Ecological Services Field Office is responsible for conserving, protecting and enhancing species, including plants, mammals, fish, and reptiles, listed under the Endangered Species Act of 1973. These federally listed species receive protections that apply across the entire country, regardless of state borders or land ownership.

At the state level, the Wyoming Game and Fish Department (WGFD) manages its own classification system. Under Wyoming law, “protected animals” include the black-footed ferret, fisher, lynx, otter, pika, and wolverine. “Protected birds” means migratory birds as defined and protected under federal law.

The Game and Fish focuses research and management efforts on 164 nongame species (excluding fish) classified as Species of Greatest Conservation Need in Wyoming’s State Wildlife Action Plan. Species on this list may not carry full ESA protection but are still subject to state-level conservation requirements.

You can compare how Wyoming’s framework stacks up against neighboring states by reviewing endangered animals in Washington or endangered animals in West Virginia, where different state-level systems are in place.

Notable Endangered Animals Found in Wyoming

Wyoming is home to a small but critically important group of species that carry full federal endangered or threatened status. Each has a unique story, a specific habitat, and a legal protection profile you should know.

Black-Footed Ferret

The black-footed ferret is a short-legged, slender-bodied member of the weasel family. Its overall fur color is pale yellow to yellowish-brown with lighter throat and belly. It has a dark mask across its face and very dark brown to black feet and tail. An adult ferret is about 19–22 inches long and weighs approximately 1.2–2.8 lbs.

Black-footed ferrets almost always occur in prairie dog colonies. Prairie dogs make up 90% of the ferret’s diet, and ferrets live in prairie dog burrows. Black-footed ferrets also occasionally eat mice, gophers, ground squirrels, and birds. Black-footed ferrets were thought to be possibly extinct before the discovery of the Meeteetse, Wyoming population. The remaining individuals from that population were brought into captivity, and in Wyoming, the only known ferrets exist at the Shirley Basin reintroduction site in Carbon County.

Pro Tip: Because black-footed ferrets are almost entirely nocturnal and live underground in prairie dog burrows, spotting one in the wild is exceptionally rare — but their presence in an area still triggers full ESA protections for any nearby activity.

Wyoming Toad

The Wyoming toad stretches only two inches at full length. The wart-covered, brown-shaded toad once was common throughout Wyoming but is now considered one of the rarest and most endangered amphibians in North America. After a steep population decline in the 1970s, the Wyoming toad was officially listed as endangered in 1984 and has retained that status ever since.

The endemic Wyoming toad is actually extinct in the wild and lives only in captivity in the Mortenson Lake National Wildlife Refuge. The Saratoga National Fish Hatchery has been breeding, rearing, and studying a captive population of Wyoming toads, with plans to begin reintroducing the endangered amphibians into the wild.

Grizzly Bear

Historical hunting and trapping led to the grizzly bear’s status as threatened under the ESA. Conservation efforts through the decades have led to tremendous success in the recovery of grizzly populations from their all-time low in the early 1980s. In fact, the bears can now be found in many parts of Wyoming’s northwest and have actually been delisted and relisted from the ESA two separate times.

For now, grizzly bears are still listed as “threatened” under the ESA and remain one of the most famous examples of wildlife conservation success. Their presence is concentrated in the Greater Yellowstone Ecosystem, and encountering one carries both personal safety and legal implications. If you’re curious about other potentially dangerous wildlife in the state, see our guide to dangerous animals in Wyoming.

Kendall Warm Springs Dace

The Kendall Warm Springs dace was listed as endangered in 1970 in the only location where it is known to occur — the Green River in Sublette County, Wyoming. This location is a series of small thermal springs and seeps about 300 meters long which feeds into the Green River. A three-meter-high waterfall forms a barrier to fish migration into Kendall Warm Springs from the Green River.

Adult Kendall Warm Springs dace average in size from 23 to 54 millimeters. Breeding males are often a bright purple color while females are typically dull olive green. Recent population accounts of this species place their numbers at between 200,000 and 300,000 individuals.

Preble’s Meadow Jumping Mouse

The Preble’s meadow jumping mouse is a small mammal with an incredible leaping ability. Reaching approximately nine inches in length at adulthood, the small mammals can jump up to three feet into the air when evading predators. It is currently classified as a threatened species in Wyoming, alongside the northern long-eared bat, grizzly bear, yellow-billed cuckoo, and Canada lynx.

You can explore more information about animals that have disappeared from the landscape entirely in our article on extinct animals — a sobering reminder of what’s at stake when protections fail.

What You Cannot Do Around Endangered Animals in Wyoming

The ESA’s most powerful tool is the prohibition on “take.” Under federal law, taking a listed species is broadly defined and goes well beyond shooting or trapping an animal.

Taking a species generally includes causing any harm to a federally protected animal or plant species. The USFWS interprets “harm” to include significant habitat modification that kills or injures wildlife by impairing essential behavioral patterns like breeding, feeding, or sheltering. In practical terms, this means even indirect actions can constitute a take.

• Shooting, trapping, or killing a listed species
• Harassing or pursuing a listed species in a way that disrupts normal behavior
• Collecting, possessing, or transporting a listed species without a permit
• Destroying or modifying critical habitat in ways that harm listed animals
• Selling or trading any part of a listed species
• Importing or exporting listed species across state or national borders

If you encounter a venomous or potentially dangerous animal that also carries protected status — such as a grizzly bear — the law does recognize a narrow self-defense exception, but it requires documentation and reporting. For context on how to identify venomous wildlife you might encounter in Wyoming, see our guide to venomous animals in Wyoming.

Common Mistake: Many people assume that “not hunting” an endangered species is enough to stay compliant. In reality, disturbing habitat, approaching nesting areas, or even letting a dog chase a listed animal can qualify as a take under federal law.

Regulations pertaining to nongame wildlife in Wyoming can be found in Chapter 52, “Take of Nongame Wildlife From Within Wyoming.” Possession of live nongame wildlife can be found in Chapter 69 for cold-blooded species and Chapter 10 for warm-blooded wildlife. These state-level rules operate alongside — not instead of — federal ESA requirements.

Endangered Species on Private Land in Wyoming

One of the most commonly misunderstood aspects of the ESA is that it applies to private land. Owning the property where an endangered species lives does not exempt you from federal law.

According to the U.S. Fish and Wildlife Service, nearly half of all federally protected threatened and endangered species have at least 80 percent of their habitats on private land. This means that private landowners — including private citizens, businesses, and organizations — must cooperate with federal agencies to conserve listed species.

Private parties may be required to work with the Fish and Wildlife Service through Habitat Conservation Plans (HCPs), which are implemented by non-federal groups in consultation with the Fish and Wildlife Service. The plans are required in order to obtain incidental take permits. Habitat Conservation Plans contain information on the predicted effects of taking a species, how these effects will be minimized or mitigated, and how the plan will be funded.

Wyoming has seen this play out in real-world conservation efforts. The BLM recently worked with the Wyoming Game and Fish and the U.S. Fish and Wildlife Service to reintroduce black-footed ferrets back onto two private ranches near Meeteetse, Wyoming. These ranches have associated BLM public lands that help support partnerships ensuring a future for both the operations of private landowners and their permitted livestock operations, as well as conservation of prairie dogs and black-footed ferrets that share the landscape.

Key Insight: If you are a rancher or agricultural producer with questions about how listed species interact with your land use, the Wyoming Game and Fish Department offers voluntary technical assistance to help you stay compliant without disrupting operations.

How to Report an Endangered Animal Sighting in Wyoming

Reporting a sighting of an endangered or threatened species in Wyoming is not just a good idea — for certain situations, it may be legally required. Even when it’s voluntary, your report contributes to population tracking, recovery planning, and habitat protection efforts.

If you see a rare or interesting bird, mammal, amphibian, or reptile, the Wyoming Game and Fish Nongame Wildlife Section wants to hear about it. You can report an observation directly through their reporting system. This data feeds into the Wyoming Game and Fish Department’s nongame wildlife database and helps biologists understand species distribution across the state.

You can also check the Atlas of Birds, Mammals, Amphibians, and Reptiles in Wyoming. The Atlas breaks the state into 28 latitude and longitude degree blocks and displays both recent and historical presence and breeding status for all terrestrial vertebrates in the state.

Here’s what to do if you encounter an endangered or threatened species in Wyoming:

1. Do not approach, touch, or disturb the animal. Maintain distance and avoid any action that could alter its behavior.
2. Note the location precisely. Use GPS coordinates or landmarks. Record the date, time, and number of individuals observed.
3. Photograph or video if safely possible. Visual documentation significantly increases the value of your report.
4. Contact Wyoming Game and Fish. Submit your sighting through their online reporting portal or call your nearest regional office.
5. Contact USFWS if federally listed. For species like grizzly bears, black-footed ferrets, or the Wyoming toad, you can also report directly to the Wyoming Ecological Services Field Office.
6. Report injured or dead listed animals immediately. A deceased or injured endangered animal should be reported to both WGFD and USFWS as soon as possible — do not move or handle the animal.

If you witness what appears to be illegal activity involving an endangered species — such as trapping, shooting, or collecting — you should also contact the Bureau of Land Management Wyoming or report it to the USFWS Law Enforcement division. Anonymous tips are accepted.

Penalties for Harming or Taking an Endangered Animal in Wyoming

The legal consequences for harming an endangered or threatened species in Wyoming are serious. Federal law sets the baseline, and state law can layer on additional penalties.

Under the federal ESA, penalties are divided into civil and criminal categories:

• Civil penalties: Any individual that knowingly takes a listed species can be fined up to $25,000 by the federal government for each violation or instance.
• Criminal penalties for knowing violations: Up to $50,000 in fines and up to one year in prison per violation.
• Criminal penalties for intentional violations: Up to $100,000 in fines and up to one year in federal imprisonment for individuals; organizations face fines up to $200,000.
• Forfeiture: Any equipment, vehicle, or vessel used in the commission of a violation may be seized and forfeited.

Important Note: Each individual act counts as a separate violation. Harming multiple animals in a single incident can result in stacked fines and charges that multiply rapidly.

At the state level, Wyoming law classifies violations involving protected wildlife under its own penalty structure. Unlawfully taking a protected animal — such as a wolverine, lynx, or otter — can result in misdemeanor or felony charges depending on the circumstances, loss of hunting and fishing licenses, and civil restitution payments based on the animal’s assessed value to the state.

The BLM Wyoming Threatened and Endangered species program participates in multiple partnerships through fiscal and technical contributions that aid in the recovery and conservation of several threatened and endangered plant and animal species. Additionally, BLM Wyoming has developed conservation strategies for public lands to avoid, minimize, or reduce impacts to Threatened and Endangered species while still allowing for multiple uses.

If you are planning a project — whether commercial, agricultural, or recreational — that may affect listed species or critical habitat, consulting with the USFWS Wyoming Field Office before beginning is the most effective way to avoid liability. You can also review how other states approach these legal frameworks, such as endangered animals in Virginia, where similar federal-state coordination structures are in place.

Understanding these rules is not just about avoiding fines. Wyoming’s wildlife — from the tiny Kendall Warm Springs dace to the wide-ranging grizzly bear — represents an irreplaceable part of the state’s natural heritage. Knowing the law is the first step toward being part of the solution rather than part of the problem. For a broader look at animals facing extinction pressures around the world, visit our overview of extinct animals to understand the stakes of conservation failures at a global scale.