The State Species Atlas

Every wild mammal. Every state.

Field guides to 471 wild mammals across all 50 states + DC, built from 3.3 million occurrence records.

Explore the atlas Browse species A–Z
Hover or tap a state. 50 states + DC live.
Alabama · 54 species · Open atlas Arizona · 142 species · Open atlas Arkansas · 60 species · Open atlas California · 214 species · Open atlas Colorado · 134 species · Open atlas Connecticut · 48 species · Open atlas Delaware · 34 species · Open atlas District of Columbia · 19 species · Open atlas Florida · 90 species · Open atlas Georgia · 67 species · Open atlas Idaho · 93 species · Open atlas Illinois · 62 species · Open atlas Indiana · 50 species · Open atlas Iowa · 52 species · Open atlas Kansas · 79 species · Open atlas Kentucky · 60 species · Open atlas Louisiana · 54 species · Open atlas Maine · 62 species · Open atlas Maryland · 53 species · Open atlas Massachusetts · 71 species · Open atlas Michigan · 62 species · Open atlas Minnesota · 64 species · Open atlas Mississippi · 47 species · Open atlas Missouri · 59 species · Open atlas Montana · 96 species · Open atlas Nebraska · 74 species · Open atlas Nevada · 116 species · Open atlas New Hampshire · 56 species · Open atlas New Jersey · 52 species · Open atlas New Mexico · 156 species · Open atlas New York · 79 species · Open atlas North Carolina · 94 species · Open atlas North Dakota · 59 species · Open atlas Ohio · 56 species · Open atlas Oklahoma · 92 species · Open atlas Oregon · 137 species · Open atlas Pennsylvania · 55 species · Open atlas Rhode Island · 44 species · Open atlas South Carolina · 56 species · Open atlas South Dakota · 76 species · Open atlas Tennessee · 72 species · Open atlas Texas · 153 species · Open atlas Utah · 124 species · Open atlas Vermont · 47 species · Open atlas Virginia · 76 species · Open atlas Washington · 128 species · Open atlas West Virginia · 54 species · Open atlas Wisconsin · 61 species · Open atlas Wyoming · 99 species · Open atlas District of Columbia · 19 species · Open atlas
51 state field guides →

Browse by state

  • 471 species mapped
  • 51 state jurisdictions
  • 3,952 state field-guide pages
  • 3.3M occurrence records

Mammals are live now. Birds, reptiles, amphibians, and more are in progress.

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All 471 species →

Compare any two species side by side

Size, diet, range, life history. Settle the debate. Start with coyote vs. gray wolf, or pick your own pair.

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Interactive tools

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A US tile map shading each state by the number of native mammal species it has lost. Data study

Gone From Your State, Wandering Back

Mountain lions, bears and wolves keep turning up in states that lost them. Every confirmation since 2020, plus what each state lost and what came back.

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A hiker in a red jacket crossing the Root Glacier in Wrangell-St. Elias National Park, Alaska. Data study

The Most Dangerous U.S. National Parks

Nine years of National Park Service death records, ranked by accidental deaths per 1 million visits, with an interactive park map.

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An animated sky with a live good-to-be-outside comfort score. Interactive tool

Is It Good Outside?

Get a live outdoor comfort score for any location, built from temperature, wind, rain, UV and air quality.

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Wildlife in focus

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Eastern diamond-backed rattlesnake coiled on pale sand
Wildlife

Snakes in Alabama: 46 Types and How to Identify Them

Alabama's forests, rivers, and coastal plain hold copperheads, cottonmouths, rattlesnakes, kingsnakes, watersnakes, and secretive burrowers.

 California kingsnake close-up with black and white bands
Wildlife

Snakes in California: 47 Types and How to Identify Them

California's snake list moves from desert rattlesnakes to coastal gartersnakes, mountain boas, kingsnakes, and burrowers.

 Northern cottonmouth coiled near wetland cover
Wildlife

Snakes in Louisiana: 49 Types and How to Identify Them

Louisiana's snake fauna is built around bayous, bottomland hardwoods, pine woods, prairies, and Gulf Coast wetlands.

How-To

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A brass lighter and a ferro rod on a weathered log beside a glowing oil lantern near a stream
How-To

25 Types of Lighters: From BIC and Zippo to IMCO and Catalytic

Twenty-five lighter types compared: spark wheel, plasma, Zippo, torch, lift-arm, catalytic, IMCO, and more, with a how-to-choose guide.
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Latest investigations

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