Gray Rat Snake
The most common snake found in Middle Tennessee homes
If you've found a snake in your attic, crawlspace, or basement in the Nashville area, there's a good chance it's a gray rat snake. Here's what you need to know — and what to do next.
(615) 613-5992Why Gray Rat Snakes End Up in Your Home
The gray rat snake (Pantherophis spiloides) is the most frequently encountered snake in Middle Tennessee homes. Non-venomous and excellent climbers, they follow their food source — mice and rats — directly into attics, crawlspaces, wall voids, and basements. If you have a rodent problem, a rat snake will eventually find it.
Despite their intimidating size — adults commonly reach 4 to 6 feet — gray rat snakes pose no venom risk to humans or pets. However, their presence inside a home is a clear sign of an entry point that needs to be sealed, and often indicates an underlying rodent issue that should be addressed at the same time.
How to Identify a Gray Rat Snake
Gray rat snakes are frequently misidentified, which can cause unnecessary alarm. Here are the key features to look for:
Color
Adults are gray to dark gray with faint brown or darker gray blotches along the back. Juveniles have a more distinct pattern and can be confused with copperheads.
Size
One of Tennessee's largest snakes — adults typically range from 3.5 to 6 feet, with some individuals exceeding 7 feet.
Head shape
Slightly wider than the neck but not the distinctly triangular head of venomous pit vipers. The head is more oval or slightly wedge-shaped.
Pupils
Round pupils — not the vertical slit pupils of venomous copperheads and rattlesnakes. (Do not get close enough to check — call us instead.)
Body shape
Slightly keeled scales give the body a matte appearance. The underside is typically white to cream with gray checkering.
Behavior
When threatened, gray rat snakes vibrate their tail rapidly — mimicking a rattlesnake — and may strike. This is a defensive bluff, not a venomous threat.
Juvenile Gray Rat Snakes Are Often Mistaken for Copperheads
Young gray rat snakes have a much more distinct blotched pattern on a lighter gray background, and their behavior — coiling, vibrating the tail, striking — closely mimics venomous species. If you find a small, patterned snake and aren't certain of the species, treat it as potentially venomous and call us. Never handle an unidentified snake.
Where Gray Rat Snakes Are Found in Homes
Attics
Gray rat snakes are exceptional climbers and regularly access attics via tree branches, downspouts, brick mortar gaps, and roof vents. Attic insulation provides warmth and often harbors mice.
Crawlspaces
Ground-level entry points — foundation cracks, open vents, gaps around pipes — allow easy access. Crawlspaces are dark, humid, and often full of rodents.
Basements
Utility penetrations, window wells, and foundation gaps are common entry routes. Basements offer stable temperatures year-round.
Wall voids
Snakes following mice through wall voids can end up inside living spaces. This is how most 'snake in the house' calls originate.
Garages
Gaps under garage doors and around utility lines are frequent entry points. Garages often store items that attract rodents.
Outbuildings
Barns, sheds, and detached garages are prime habitat — warm, sheltered, and usually full of rodent activity.
Found a Gray Rat Snake? Here's What to Do
Don't handle it
Even non-venomous snakes will bite when cornered or grabbed. A bite from a large rat snake is painful and can cause infection. Leave it alone.
Keep people and pets away
Close the door to the room if the snake is inside. Keep children and pets out of the area until the snake is removed.
Note the location
If the snake moves, track where it goes. Knowing its last location helps our technicians find it quickly.
Call Nashville Snake Removal
We'll dispatch a licensed technician to safely remove the snake, inspect for entry points, and recommend next steps to prevent a recurrence.
Gray Rat Snakes Are Beneficial — Just Not Inside Your Home
Gray rat snakes are one of the most effective natural rodent controllers in Tennessee. A single adult can consume dozens of mice and rats per year, making them genuinely valuable to the ecosystem. Our removal process is always humane — we relocate snakes to appropriate natural habitat rather than killing them. The goal is to remove the snake from your home, seal the entry points, and address the rodent activity that attracted it in the first place.
Gray Rat Snake in Your Home? Call Us Now.
We remove gray rat snakes from attics, crawlspaces, and living areas across Greater Nashville. Same-day service available.