Advertisement
Fun Facts
Did You Know?
Diamondback Watersnake — Non-venomous watersnake with diamond-shaped back markings that superficially suggest rattlesnake patterns. Lacks the rusty dorsal stripe, triangular head geometry, heat-sensing pits, and rattle. Found near water rather than upland forest. Round pupils. If the snake is aquatic and lacks a rattle, it's a watersnake
If This Animal Could Talk...
"Watch closely, respect my space, and let my habitat explain the rest of the story."
Canebrake Rattlesnake:Canebrake Rattlesnake
The canebrake rattlesnake is the largest venomous snake in North Louisiana, and it is the one most likely to be stretched out next to the trail you're walking without you knowing until the rattle starts. Crotalus horridus atricaudatus is a large pit viper with chevron crossbands, a rusty dorsal stripe, and a black tail in adults — a distinctive animal that should be easy to spot and yet is consistently overlooked because it lies motionless in leaf litter and dead wood and is remarkable at looking like neither of those things.
A Few More Facts
How they hunt and forage: Primarily mammals — mice, rats, squirrels, rabbits, occasionally birds. Ambush hunters that sit motionless near game trails or burrow entrances and wait for prey to walk within range. The wait can last hours or days. The snake is patient and the prey eventually arrives. The strike is under half a second from initiation to contact, too fast for prey to evade after it starts. After striking, the snake releases the prey and allows it to die from envenomation, then tracks the dead animal by scent and swallows it whole headfirst. The venom serves double duty: killing the prey and beginning tissue breakdown to facilitate digestion.
Live birth or eggs? yes
When young are born: Gestation runs four to five months and females give live birth to 5 to 22 young — typically 8 to 12 — between late July and mid-September.
What Is the Timber “Canebrake” Rattlesnake Often Confused With?
Canebrakes are large, heavy-bodied snakes averaging three to four feet long, with some individuals reaching five feet or more. Adults can weigh three to five pounds. The body is thick and muscular in a way that communicates power before anything else does. The base color is gray to brown — sometimes pale tan, sometimes darker depending on individual and habitat. Dark chevron-shaped crossbands run down the back from neck to tail, creating a bold zigzag pattern that is diagnostic for the species. A rusty or orange dorsal stripe runs down the centerline of the back between the chevrons — subtle in young snakes, increasingly prominent with age, until adult canebrakes carry a visible rusty-red stripe that contrasts clearly with the body and chevron pattern.
Drag the handle left and right to compare Timber “Canebrake” Rattlesnake side by side with the species it gets mistaken for most.
1 of 3
Advertisement
Accessibility
Accessibility
Canebrake rattlesnakes are not recommended targets for close-range observation. The combination of camouflage, strike range, and venom potency makes proximity encounters inadvisable, and the animals are rare enough that the population doesn't benefit from repeated disturbance at observed locations.
For visitors who want to observe canebrakes, the most appropriate approach is slow, careful vehicle-based observation along refuge roads during warm months — snakes crossing roads or basking at road margins are visible without requiring approach into the strike zone. Tensas River NWR road crossings during summer nights produce sightings that allow good views from inside a vehicle.
For visitors who are blind or have low vision, the rattle is the primary encounter signal — distinctive, loud, directional, and unmistakable after hearing it the first time. If you hear a rattlesnake rattle, stop moving immediately, identify the direction of the sound, and back away in the opposite direction. Do not move toward the sound to see where it is. The snake knows where you are. The rattle is the snake telling you that. Take the information and leave.
Audible distance for the rattle varies with terrain and wind but is typically 20 to 30 feet in quiet forest. If you hear it that clearly, the snake is likely within 15 feet. That is inside strike range for a large adult. Do not reassess this estimate by approaching.
Advertisement
Frequently Asked Questions
Does Timber "Canebrake" Rattlesnake live in North Louisiana?
Yes. The canebrake rattlesnake is the largest venomous snake in North Louisiana, and it is the one most likely to be stretched out next to the trail you're walking without you knowing until the rattle starts. In North Louisiana, canebrake rattlesnakes are one of only two rattlesnake species present — the other being the much smaller pygmy rattlesnake — and they are substantially less common than copperheads and cottonmouths. Every canebrake sighting in North Louisiana is worth reporting to LDWF.
How do you identify Timber "Canebrake" Rattlesnake?
Canebrakes are large, heavy-bodied snakes averaging three to four feet long, with some individuals reaching five feet or more. Adults can weigh three to five pounds. The body is thick and muscular in a way that communicates power before anything else does
What does Timber "Canebrake" Rattlesnake eat?
Primarily mammals — mice, rats, squirrels, rabbits, occasionally birds. Ambush hunters that sit motionless near game trails or burrow entrances and wait for prey to walk within range. The wait can last hours or days. The snake is patient and the prey eventually arrives
Is Timber "Canebrake" Rattlesnake dangerous to people?
The Venom
Canebrake venom is variable in composition and can include hemotoxic components that destroy blood cells and tissue, neurotoxic components that affect the nervous system, and cytotoxic components that destroy cells directly. Individuals in South Arkansas and North Louisiana are known to carry venom with both hemotoxic and neurotoxic components — a combination that makes envenomation from this region potentially more serious than from northern timber rattlesnake populations where neurotoxic components are less common.
The variability is genuine. Two canebrakes from the same forest may have meaningfully different venom compositions. This is not reassuring from a medical standpoint, which is why treatment protocols for rattlesnake bites use broad-spectrum antivenom rather than trying to diagnose venom type before treating. Get to the hospital. Let the doctors sort out the specifics. Antivenom for rattlesnake bites — CroFab or Anavip — is effective but time-sensitive; the sooner treatment begins, the less tissue damage accumulates. Delayed treatment does not just delay recovery. It increases the probability of permanent injury.
The venom is delivered through long, hollow fangs that fold against the roof of the mouth when not in use and swing forward at the moment of strike. Fang length in large adult canebrakes can exceed half an inch, which provides penetration depth sufficient to reach subcutaneous tissue and blood vessels through clothing. Long pants and boots provide meaningful protection against smaller pit vipers whose fangs cannot fully penetrate. They provide less protection against large canebrakes whose fangs are longer and whose strike is directed at a higher target.
