Venomous animals in Connecticut
The ones that need the most respect: timber rattlesnake. A bite from any of them is a medical emergency.
- 1 dangerous
- 2 medically significant
Where they turn up in Connecticut
- None recorded
- 1 species
- 2
- 3 to 4
- 5 or more
Venomous snakes in Connecticut
Timber rattlesnakeDangerous119 records, 5 counties
CopperheadMedically significant125 records, 4 counties
Venomous snakes in Connecticut: map, photos and look-alikes
Venomous spiders in Connecticut
Venomous spiders in Connecticut: map, photos and look-alikes
When they are out
- Venomous snakes
- Venomous spiders
Recorded, but not living here
- Rare records Brown widow 1 open record
A rare record means someone found or reported the animal once or a few times, but there is no known population. Many are strays, pets or hitchhikers in cargo.
Harmless look-alikes in Connecticut
- Copperhead vs Northern Water Snake Northern water snake is harmless
- Copperhead vs Rat Snake Rat snake is harmless
- Copperhead vs Milk Snake Milk snake is harmless
- Copperhead vs Hognose Snake Eastern hognose snake is harmless
Quick answers for Connecticut
- Lives here Rattlesnakes
- Lives here Copperheads
- Not here Cottonmouths
- Not here Brown recluses
- Lives here Black widows
Questions
How many venomous snakes live in Connecticut?
2 species: Timber rattlesnake and Copperhead.
Are there brown recluse spiders in Connecticut?
No. There are no open records of the brown recluse from Connecticut, and the state is outside its range.
Are there scorpions in Connecticut?
No. There are no open records of native scorpions from the state.
When are venomous animals most active in Connecticut?
Most open records from Connecticut fall in August. 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.