Texas has four venomous snake species: the Western Diamondback Rattlesnake, the Timber (Canebrake) Rattlesnake, the Copperhead, and the Western Cottonmouth (Water Moccasin). In the Georgetown and Williamson County area, the two you're most likely to encounter near your home are Copperheads and Cottonmouths. Both are pit vipers. Both require the same response: distance and a call to a professional.
But knowing which one you have helps you understand the risk level, the likely habitat, and what kind of removal is appropriate. Here's a practical identification guide.
At a Glance: Key Differences
Southern Copperhead
- Tan/pink base with rich copper-brown hourglass bands
- Hourglass shape narrows at the spine (pinched at top)
- Copper-colored head — distinctly reddish
- Rarely near water — prefers rocky hillsides, cedar, leaf litter
- Smaller: typically 24–36 inches
- More docile — will freeze and rely on camouflage
Western Cottonmouth
- Dark brown/olive/black — often nearly solid colored in adults
- Dark bands may be visible in juveniles; fades with age
- White mouth lining (gives "cottonmouth" name) — may gape when threatened
- Almost always near water — creeks, lakes, river edges, drainage
- Larger and heavier-bodied: typically 30–48 inches
- More aggressive posture — will hold ground and vibrate tail
Detailed Visual Identification Guide
| Feature | Copperhead | Cottonmouth (Water Moccasin) |
|---|---|---|
| Pattern | Bold hourglass crossbands — narrow on top, wider on sides. Pinkish-tan background. | Adults often dark or nearly patternless. Juveniles have banded pattern with bright yellow tail tip. |
| Head color | Copper-red/orange head, distinctly different from body | Dark brown head, blends with body |
| Head shape | Wide, triangular pit viper head. Dark cheek stripe behind eye. | Wider, flatter triangular head. White "racing stripe" from nostril to jaw on some individuals. |
| Body build | Moderate — not as heavy as cottonmouth | Heavy, chunky body — noticeably thicker than a comparably-long copperhead |
| Habitat (Georgetown) | Cedar hillsides, rocky terrain, wooded neighborhoods near the Balcones Escarpment | San Gabriel River, Blue Hole, Lake Georgetown, drainage ditches, wet areas |
| Behavior when threatened | Freezes, relies on camouflage. May strike without warning if stepped on. | Holds ground, opens mouth to display white interior (warning display), vibrates tail |
| Season active | April–October; most active May–September | March–October; active at night in summer heat |
The Hardest Cases: Juvenile Cottonmouths
Juvenile cottonmouths (under 18 inches) have a patterned appearance that closely resembles a copperhead — bright bands on a lighter background, with a yellow tail tip they use to lure prey. This is the most common misidentification in Texas.
The key difference: juvenile cottonmouths still have the white mouth lining, still live near water, and typically have a more strongly banded dark-and-light pattern than a copperhead's hourglass. But honestly, at juvenile size, if you're uncertain: treat it as venomous, back up, and call.
The Common "Harmless" Snakes That Get Misidentified
Most snakes people call me about turn out to be non-venomous species that superficially resemble pit vipers. The most common in Williamson County:
- Texas Rat Snake — the most common misidentified snake in the county. Dark blotches on pale background; can be aggressive when cornered. Non-venomous. Important for rodent control.
- Broad-banded Watersnake — lives near water, has bands, and gets constantly mistaken for a cottonmouth. No triangular head, round pupils, and will flee into water rather than hold ground.
- Eastern Hognose Snake — will flatten its head to look triangular and "play dead" convincingly. Completely harmless. Favors sandy areas.
- Texas Brown Snake — small, brown, sometimes called a "baby copperhead." Not a copperhead. Non-venomous.
The Pupil Myth — Why It's Unreliable
You may have heard that venomous snakes have elliptical "cat-like" pupils while harmless snakes have round pupils. This is true in Texas pit vipers — but getting close enough to see a snake's pupil clearly is dangerous. Don't use this as your primary identification method. Use pattern, head shape, habitat, and behavior from a safe distance.
What to Do If You See a Venomous Snake
If you encounter a copperhead or cottonmouth on your property:
- Back up. Most bites happen when people try to kill or move the snake themselves. Give it at least 6 feet of space — they can strike up to half their body length.
- Keep people and pets away from the area. Keep visual contact with the snake from a safe distance if possible, so you can tell us where it is.
- Don't try to kill it. Most snakebites in Texas occur when someone tries to kill or handle the snake. A dead venomous snake can still envenomate via a bite reflex for up to 90 minutes.
- Call us for removal. We relocate venomous snakes safely using professional snake tongs and a secure transport container. The snake goes to a suitable habitat away from residential areas.
If Someone Is Bitten
If a person or pet is bitten by a suspected venomous snake:
- Call 911 or go immediately to a hospital emergency room — don't drive yourself if you've been bitten
- Keep the bitten limb still and below heart level
- Remove jewelry and tight clothing near the bite before swelling begins
- Do not try to suck out venom, apply ice, cut the wound, apply a tourniquet, or use a snakebite kit
- For pets: call an emergency vet immediately — dogs can survive pit viper bites with prompt antivenin treatment
- If possible, note the snake's appearance for the medical team (approximate size, pattern) — do not attempt to capture or photograph it at close range
In Texas, the Poison Control Center can also advise: 1-800-222-1222.
Venomous Snake on Your Property?
We safely relocate copperheads and cottonmouths from Georgetown, Round Rock, Cedar Park, and surrounding areas. Don't try to handle it yourself — call us.
Call (512) 785-6226Where Are You Most Likely to See These Snakes in Georgetown?
Copperheads are common in neighborhoods near the Balcones Escarpment — anywhere with cedar, rocks, and leaf litter. Georgetown's older neighborhoods near the historic Square, areas near Inner Space Cavern Road, and any property backing up to cedar hillsides are classic copperhead territory. They're most active at night in summer and are masters of camouflage in leaf litter.
Cottonmouths are concentrated near the San Gabriel River corridor, Blue Hole Regional Park, Lake Georgetown, and any drainage ditch or retention pond. If you live near water in Georgetown, you're in cottonmouth country. Sun City Georgetown residents with golf course water features occasionally encounter them.