Venomous animals in Wyoming

Venomous species living here
42 venomous snakes, 1 venomous spider, 1 scorpion

The ones that need the most respect: western rattlesnake, prairie rattlesnake. A bite from any of them is a medical emergency.

Dangerous: 2Medically significant: 1Painful, rarely serious: 1
  • 2 dangerous
  • 1 medically significant
  • 1 painful, rarely serious
Venomous snakes
2
Venomous spiders
1
Scorpions
1
Centipedes
0
Open records
344
Counties with any record
19

Where they turn up in Wyoming

Natrona: Black widow, Prairie rattlesnakePark: Northern scorpion, Prairie rattlesnakeAlbany: Western diamondback rattlesnakePlatte: Black widow, Prairie rattlesnakeCrook: Black widow, Prairie rattlesnakeGoshen: Prairie rattlesnakeJohnson: Prairie rattlesnakeSweetwater: Prairie rattlesnake, Western rattlesnakeSheridan: Prairie rattlesnakeNiobrara: Northern scorpion, Prairie rattlesnakeUinta: Northern scorpion, Western rattlesnakeWashakie: Prairie rattlesnakeFremont: Prairie rattlesnakeWeston: Prairie rattlesnakeBig Horn: Northern scorpion, Prairie rattlesnakeHot Springs: Prairie rattlesnakeLaramie: Prairie rattlesnakeCarbon: Prairie rattlesnake, Western rattlesnakeCampbell: Prairie rattlesnake
Number of venomous species with open GBIF records in each county. Blank counties often mean nobody has posted a record yet, not that nothing lives there.

Venomous snakes in Wyoming

Venomous snakes in Wyoming: map, photos and look-alikes

Venomous spiders in Wyoming

Venomous spiders in Wyoming: map, photos and look-alikes

Scorpions in Wyoming

Scorpions in Wyoming: map, photos and look-alikes

When they are out

Jan: 1 records (venomous snake)JanFebMarApr: 3 records (venomous snake)AprMay: 12 records (venomous snake)May: 1 records (scorpion)MayJun: 50 records (venomous snake)Jun: 2 records (scorpion)JunJul: 31 records (venomous snake)Jul: 1 records (scorpion)JulAug: 30 records (venomous snake)Aug: 2 records (spider)AugSep: 19 records (venomous snake)SepOct: 120 records (venomous snake)Oct: 2 records (spider)Oct: 1 records (scorpion)OctNovDec
Open records by month; most fall in June, October. People record animals when they are outdoors too, so winter looks quieter than it may be.

Harmless look-alikes in Wyoming

Quick answers for Wyoming

Questions

How many venomous snakes live in Wyoming?

2 species: Western rattlesnake and Prairie rattlesnake.

Are there brown recluse spiders in Wyoming?

No. There are no open records of the brown recluse from Wyoming, and the state is outside its range.

Are there scorpions in Wyoming?

Yes: Northern scorpion.

When are venomous animals most active in Wyoming?

Most open records from Wyoming fall in June, October. Records follow when people are outdoors too, so treat this as a guide, not a rule.

What should I do after a bite or sting?

Call 911 for any venomous snakebite or a severe reaction. For spider bites and scorpion stings, call Poison Control at 1-800-222-1222, free and open 24/7.

Neighboring states