Snakes in Connecticut

Here are common snakes found in Connecticut, including 1 venomous species to watch for. Tap any snake for a full identification profile.

Identify a snake in Connecticut Snake bite first aid

Caution

Venomous snakes in Connecticut

A snake peeks out from a vibrant green pot in an outdoor setting.

Venomous

Copperhead

Agkistrodon contortrix

Responsible for more venomous snakebites than any other US species, but its bite is rarely fatal. Excellent camouflage in leaf litter leads to surprise encounters.

Danger 3/5

Beneficial

Harmless snakes in Connecticut

Detailed close-up shot of a central ratsnake slithering through grass, highlighting its features.

Non-venomous

Eastern Ratsnake

Pantherophis alleghaniensis

A large, harmless constrictor and one of the best natural rodent controllers around homes and farms. Juveniles are gray and blotched, leading to copperhead confusion.

Danger 0/5

Identifying snakes in Connecticut

Knowing your location is one of the most powerful tools in snake identification. Many snakes look similar, but the species actually present in Connecticut narrows the possibilities dramatically. When you use our snake identifier, factor in your state to boost confidence — and if you ever spot a snake you can't identify, treat it as potentially dangerous and keep your distance.