States Wildlife

Alaska wildlife: what lives here and what is dangerous

Last checked November 3, 2026 against official sources.

North American Porcupine
Photo: The Cosmonaut · CC BY-SA 2.5 ca · Wikimedia Commons · resized

No snakes are on Alaska's official lists. This guide covers 7 animal groups from Alaska Department of Fish and Game lists and other official sources, with photos, venomous status and when each group is active.

Identification help has limits: a photo cannot confirm that an animal is safe. Watch from a distance and never handle a wild animal.

On this page
  1. Animal groups
  2. Dangerous animals
  3. Invasive species
  4. Seasons
  5. Official agency and reporting
  6. Questions
  7. Sources

Animal groups in Alaska

Dangerous animals in Alaska

These are the animals official sources describe as venomous or as a risk to people in Alaska, across 4 groups. The reason is given in the source's own terms.

AnimalGroupWhy, per the sourceSource
Hobo spiderSpidersVenomous: “Bites may cause a small irritation to the skin, necrotic lesions to the skin, systemic disturbances, blood disorders, or even internal organ damage, depending on the amount of venom injected.”Alaska Department of Environmental Conservation, Pesticide Program
YellowjacketsInsects and BugsStinging: “Some species are nuisance pests when their stinging and scavenging behavior puts them in contact with humans.”University of Alaska Fairbanks Cooperative Extension Service
TicksTicks (arachnids)Disease: “Tularemia occurs sporadically in Alaska, and humans can become infected from a tick bite and through direct contact with an infected animal.”Alaska Department of Health, Section of Epidemiology
American Dog TickTicks (arachnids)Disease vector: “The American dog tick is a vector of Rocky Mountain Spotted Fever (RMSF) and tularemia.”Alaska Department of Fish and Game
Brown or Grizzly BearMammalsAttacks: “Bears are curious, intelligent and tend to avoid or ignore people, but can be dangerous.”Alaska Department of Fish and Game
American Black BearMammalsAttacks: “Bears are curious, intelligent and tend to avoid or ignore people, but can be dangerous.”Alaska Department of Fish and Game
Polar BearMammalsAttacks: “Bears are curious, intelligent and tend to avoid or ignore people, but can be dangerous.”Alaska Department of Fish and Game
MooseMammalsAttacks if provoked: “While not normally aggressive, moose can become dangerous if provoked, so it is important to know how to respond if you encounter an aggressive moose.”Alaska Department of Fish and Game
WolfMammalsAttacks (rare): “Wolves rarely act aggressively toward people, but there have been instances in Alaska and Canada where wolves have attacked people.”Alaska Department of Fish and Game
Arctic FoxMammalsDisease (rabies): “In Alaska, rabies occurs most often in arctic fox and red fox from the North coast, West coast and Alaska Peninsula.”Alaska Department of Fish and Game
Red FoxMammalsDisease (rabies): “In Alaska, rabies occurs most often in arctic fox and red fox from the North coast, West coast and Alaska Peninsula.”Alaska Department of Fish and Game
Brown (Norway) RatMammalsDisease (parasites and pathogens): “Aside from the predation pressure of rats on Alaskan wildlife, they also carry parasites, pathogens and diseases that can be harmful to other species as well as humans.”Alaska Department of Fish and Game
MuskoxMammalsMay react defensively and charge if threatened: “Muskoxen may appear very tolerant. However, they are powerful animals and may react defensively if they feel threatened.”Alaska Department of Fish and Game
Wood BisonMammalsCan be startled and put a person in danger (few injuries recorded): “There is a chance, however, that one could be startled and put a person in danger, so ADF&G is working with village residents to minimize that risk.”Alaska Department of Fish and Game
American BeaverMammalsDisease (giardia in drinking water): “Beavers can spread disease, for example, giardia in drinking water.”Alaska Department of Fish and Game

Invasive and nonnative species

9 nonnative animals are named on Alaska's official lists (Alaska Department of Fish and Game).

  • Northern pike (outside native range) Esox lucius
  • Red-legged frog Rana aurora
  • European green crab Carcinus maenas
  • Norway rat Rattus norvegicus
  • European starling Sturnus vulgaris
  • Rock dove Columba livia
  • Atlantic salmon Salmo salar
  • Gypsy moth Lymantria dispar

All invasive species in Alaska, with where they live and how to report them.

When animals are active in Alaska

Darker cells are the months with more open-licence observation records of each group in Alaska (GBIF). They show when people see and record these animals, not how many there are. The current month, this month, is highlighted.

JanFebMarAprMayJunJulAugSepOctNovDec
SpidersJanuary: 1 recordFebruary: 1 recordMarch: 14 recordsApril: 22 recordsMay: 120 recordsJune: 214 recordsJuly: 187 recordsAugust: 265 recordsSeptember: 49 recordsOctober: 7 recordsNovember: 3 recordsDecember: 4 records
Frogs and ToadsJanuary: 0 recordsFebruary: 0 recordsMarch: 0 recordsApril: 2 recordsMay: 14 recordsJune: 24 recordsJuly: 31 recordsAugust: 9 recordsSeptember: 3 recordsOctober: 0 recordsNovember: 0 recordsDecember: 0 records
Insects and BugsJanuary: 11 recordsFebruary: 20 recordsMarch: 65 recordsApril: 253 recordsMay: 1,071 recordsJune: 3,900 recordsJuly: 4,379 recordsAugust: 1,830 recordsSeptember: 418 recordsOctober: 91 recordsNovember: 26 recordsDecember: 12 records
MammalsJanuary: 134 recordsFebruary: 138 recordsMarch: 189 recordsApril: 214 recordsMay: 483 recordsJune: 1,024 recordsJuly: 1,067 recordsAugust: 775 recordsSeptember: 636 recordsOctober: 197 recordsNovember: 122 recordsDecember: 148 records
Sharks and Marine LifeJanuary: 0 recordsFebruary: 2 recordsMarch: 0 recordsApril: 1 recordMay: 7 recordsJune: 35 recordsJuly: 47 recordsAugust: 90 recordsSeptember: 28 recordsOctober: 7 recordsNovember: 6 recordsDecember: 0 records

What official sources say about seasons

Official agency and how to report

Alaska's wildlife agency is the Alaska Department of Fish and Game.

Report: Report invasive species to the ADF&G Invasive Species Hotline 1-877-INVASIV (1-877-468-2748) or [email protected]. Report dangerous wildlife encounters with the ADF&G wildlife encounter form (https://www.adfg.alaska.gov/index.cfm?adfg=reportwildlifeencounter.main). Alaska Department of Fish and Game

Official safety advice

Questions people ask about Alaska wildlife

Are there snakes in Alaska?

No. ADF&G says Alaska has no snakes. The only reptiles are rare sea turtles. Alaska Department of Fish and Game · More

Are there venomous snakes in Alaska?

No. ADF&G says there are no snakes at all in Alaska, so there are no venomous snakes. Alaska Department of Fish and Game

Are there rattlesnakes in Alaska?

No. ADF&G says there are no snakes in Alaska. Alaska Department of Fish and Game

Are there lizards in Alaska?

No. ADF&G says there are no lizards in Alaska. Alaska Department of Fish and Game

Are there turtles in Alaska?

Rarely. ADF&G says there are no freshwater turtles. Four sea turtle species are rare visitors. Alaska Department of Fish and Game

Are there alligators in Alaska?

No. ADF&G says the only reptiles in Alaska are rare sea turtles. Alaska Department of Fish and Game

Are there frogs in Alaska?

Yes. The wood frog is found across most of Alaska, including above the Arctic Circle. Other frogs and the western toad are found mainly in Southeast Alaska. Alaska Department of Fish and Game

Are there poisonous amphibians in Alaska?

Yes. ADF&G says the roughskin newt of Southeast Alaska has poisonous skin. The toxins are harmless unless swallowed but can irritate skin or eyes. Wash your hands after handling. Alaska Department of Fish and Game

Are there venomous spiders in Alaska?

Alaska DEC says most venomous spiders do not exist in Alaska, but the hobo spider may live in the panhandle (Southeast Alaska). Its bite can cause skin wounds and other symptoms. For any bite, call 911 or Poison Help at 1-800-222-1222. Alaska Department of Environmental Conservation, Pesticide Program

Are there ticks in Alaska?

Yes. Alaska has six native tick species. Several non-native ticks have also been found. Alaska Department of Environmental Conservation, Office of the State Veterinarian

Is there lyme disease in Alaska?

No. The Department of Health says no one has been reported to catch Lyme disease or Rocky Mountain spotted fever in Alaska. Cases were caught while traveling out of state. Alaska Department of Health, Section of Epidemiology

Are there bears in Alaska?

Yes. ADF&G says Alaska is bear country, with all three North American bear species. Brown bears live nearly everywhere in the state. Alaska Department of Fish and Game

Are moose dangerous?

Yes. ADF&G says moose are not normally aggressive but can become dangerous if provoked. Never approach a moose. Alaska Department of Fish and Game

Do wolves attack people in Alaska?

Rarely. ADF&G says wolves rarely act aggressively toward people. A person was killed in Alaska in 2010. Alaska Department of Fish and Game

Is there rabies in Alaska?

Yes. ADF&G says rabies occurs most often in arctic and red foxes on the North and West coasts and the Alaska Peninsula. Alaska Department of Fish and Game

Do bats in alaska carry rabies?

Rarely. ADF&G says rabies is not common in Alaska bats: 5 cases have been documented, all in Southeast Alaska. None passed the disease to a person. Alaska Department of Fish and Game

Are there sharks in Alaska?

Yes. NOAA says three sharks are commonly found in Alaskan waters. Great white, blue and six-gill sharks occur occasionally. NOAA Fisheries, Alaska Fisheries Science Center

Sources

  1. Our Agency: Mission. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
  2. Checklist of Alaska Birds, 32nd edition—2026. University of Alaska Museum (with the Alaska Bird Records Committee). 32nd edition—2026; checked November 3, 2026.
    Quoted passages (1)
    “As of 1 Jan 2026 the list of avian taxa known in Alaska included 551 species in 67 families and 21 orders.”
  3. Mammals of Alaska: Checklist of the mammals of Alaska (page). University of Alaska Museum of the North, University of Alaska Fairbanks. undated page; checked November 3, 2026.
    Quoted passages (1)
    “This checklist includes all 116 mammal species known to presently occur in Alaska.”
  4. Shark Research in Alaska. NOAA Fisheries, Alaska Fisheries Science Center. updated August 14, 2023; checked November 3, 2026.
    Quoted passages (1)
    “There are three shark species commonly found in Alaskan waters: Pacific sleeper shark (Somniosus pacificus), spiny dogfish (Squalus suckleyi), and salmon shark (Lamna ditropis).”
  5. Alaska Public Health Pest Control Manual, Category Eight. Alaska Department of Environmental Conservation, Pesticide Program. January 2020; checked November 3, 2026.
    Quoted passages (2)
    “Bites may cause a small irritation to the skin, necrotic lesions to the skin, systemic disturbances, blood disorders, or even internal organ damage, depending on the amount of venom injected.”
    “Although most venomous spiders do not exist in Alaska, the hobo spider, Tegenaria agrestis, may inhabit the panhandle area of Alaska.”
  6. Beneficial Arthropods of Alaska: Natural Enemies (PMC-10075). University of Alaska Fairbanks Cooperative Extension Service. Revised January 2023; checked November 3, 2026.
    Quoted passages (2)
    “Some species are nuisance pests when their stinging and scavenging behavior puts them in contact with humans.”
    “Only the new queen overwinters; the remainder of the colony dies.”
  7. Ticks and Tickborne Disease Information. Alaska Department of Health, Section of Epidemiology. archived copy, captured March 26, 2025; checked November 3, 2026.
    Quoted passages (2)
    “Tularemia occurs sporadically in Alaska, and humans can become infected from a tick bite and through direct contact with an infected animal.”
    “There have been no reports of people contracting Rocky Mountain spotted fever or Lyme disease in Alaska.”
  8. Dog ticks have been introduced and are establishing in Alaska (Wildlife Health and Disease Surveillance Program memorandum). Alaska Department of Fish and Game. 2016 (per file name; checked November 3, 2026.
    Quoted passages (1)
    “The American dog tick is a vector of Rocky Mountain Spotted Fever (RMSF) and tularemia.”
  9. Safety in Bear Country. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (4)
    “Bears are curious, intelligent and tend to avoid or ignore people, but can be dangerous.”
    “Brown bears, also called grizzly bears, are found nearly everywhere in Alaska. Black bears inhabit most of Alaska’s forests. Polar bears frequent the sea ice and tundra of extreme northern and western Alaska.”
    “Stay calm during a bear encounter. Ready your deterrent. Stand your ground, group up with others and alert the bear by talking calmly. Don't run.”
    “Bears have only a few months to build up fat reserves for a long winter in dens and are always looking for something to eat.”
  10. Living With Moose. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (3)
    “While not normally aggressive, moose can become dangerous if provoked, so it is important to know how to respond if you encounter an aggressive moose.”
    “The key to coexisting with moose is to avoid confrontations by giving moose plenty of space. Never approach a moose!”
    “Look out for moose on roadways especially in winter when moose-vehicle collisions are most common.”
  11. Living With Wolves. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (3)
    “Wolves rarely act aggressively toward people, but there have been instances in Alaska and Canada where wolves have attacked people.”
    “The first case of wild healthy wolves killing a human in modern North America occurred in Saskatchewan in 2005; a second person was killed in 2010 in Alaska.”
    “If you encounter a wolf or pack of wolves at close range do not run or turn away.”
  12. Wildlife Diseases and Parasites in Alaska: Rabies. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (2)
    “In Alaska, rabies occurs most often in arctic fox and red fox from the North coast, West coast and Alaska Peninsula.”
    “Rabid foxes often lose natural fear of humans. Avoid contact.”
  13. Invasive Species: Norway Rat (Impacts). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Aside from the predation pressure of rats on Alaskan wildlife, they also carry parasites, pathogens and diseases that can be harmful to other species as well as humans.”
  14. Living With Muskoxen. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (2)
    “Muskoxen may appear very tolerant. However, they are powerful animals and may react defensively if they feel threatened.”
    “Bull muskoxen are more aggressive during the fall breeding season which takes place from August through October.”
  15. Living with Wood Bison. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “There is a chance, however, that one could be startled and put a person in danger, so ADF&G is working with village residents to minimize that risk.”
  16. Living With Beavers. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Beavers can spread disease, for example, giardia in drinking water.”
  17. Invasive Pike in Southcentral Alaska. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “For this reason, in Southcentral, the northern pike is an invasive species.”
  18. Invasive Species: Red-legged Frog (Biological Characteristics). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Invasive Species — Red-legged Frog (Rana aurora)”
  19. Invasive Species: European Green Crab (Biological Characteristics). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “ALERT!! Invasive European green crabs found in Alaska.”
  20. Invasive Species: Norway Rat (Biological Characteristics). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Invasive Species — Norway Rat (Rattus norvegicus)”
  21. Invasive Species. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
  22. How to Report an Invasive Species you saw in Alaska. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Call the Invasive Species Hotline: 1-877-INVASIV (1-877-468-2748)”
  23. Sounds Wild: No Snakes in Alaska (radio episode transcript). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (3)
    “There are no lizards, freshwater turtles, or snakes in Alaska.”
    “Alaska is famous for its complete absence of snakes, something most people - especially people from venomous snake country - fully appreciate.”
    “The only reptiles in Alaska are rare sightings of sea turtles.”
  24. Wood Frog (species account PDF, prepared by the Alaska Natural Heritage Program). Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Widely distributed throughout Alaska and is the only amphibian found above the Arctic Circle.”
  25. Roughskin Newt Species Profile. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (2)
    “These neurotoxins are generally harmless unless ingested, but may cause skin or eye irritation in humans, especially if eyes are touched after handling newts before washing hands.”
    “In Alaska, breeding probably commences in April and continues into June”
  26. Information on Ticks. Alaska Department of Environmental Conservation, Office of the State Veterinarian. archived copy, captured May 21, 2026; checked November 3, 2026.
    Quoted passages (1)
    “Alaska is home to six native tick species, or ticks that have historically been found in the state.”
  27. Living With Bats: Rabies. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (2)
    “There are only 5 documented cases of bats with rabies in Alaska, all from Southeast Alaska.”
    “Please call the Alaska Section of Epidemiology at the Alaska Department of Health and Social Services (ADHSS) immediately if:”
  28. Western Toad Species Profile. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “The western toad's breeding period is variable depending on the location but it generally occurs late April to July in Alaska.”
  29. Living With Bats. Alaska Department of Fish and Game. undated page; checked November 3, 2026.
    Quoted passages (1)
    “Excluding maternity roosts in Alaska should be done in late September or early October”
  30. GBIF.org occurrence records, human observations licensed CC0 1.0 or CC BY 4.0 only, accessed November 3, 2026. The datasets behind these counts are listed on our Sources page.