Houston’s diverse habitats support a wide variety of snake species, from harmless garden snakes to venomous pit vipers. This list covers 27 snakes you might encounter in Houston, Texas, providing key details about each species. Whether you’re a nature enthusiast, a homeowner, or just curious, this guide will help you identify and understand these reptiles.
1. Texas Rat Snake (Pantherophis obsoletus lindheimeri)
The Texas rat snake is a nonvenomous species common in Houston’s suburban and wooded areas. It is an excellent climber and often found near barns or homes hunting rodents, making it beneficial for pest control. Its color pattern ranges from yellowish to black with blotches.
2. Western Cottonmouth (Agkistrodon piscivorus leucostoma)
The Western cottonmouth, or water moccasin, is a venomous pit viper often found near water bodies like swamps and slow-moving streams around Houston. It has a distinctive white mouth lining visible when threatened. Despite its fearsome reputation, it usually avoids humans.
3. Eastern Coral Snake (Micrurus fulvius)
Houston’s eastern coral snake is a highly venomous species recognizable by its bright red, yellow, and black banding. It is secretive and rarely seen, preferring leaf litter and wooded areas. The rhyme “red touch yellow, kill a fellow” helps distinguish it from nonvenomous lookalikes.
4. Bullsnake (Pituophis catenifer sayi)
Bullsnakes are large, nonvenomous constrictors that can grow over six feet long. They are often mistaken for rattlesnakes due to their similar coloring and defensive hissing behavior. Bullsnakes help control rodent populations in Houston’s grasslands and agricultural areas.
5. Western Ribbon Snake (Thamnophis proximus)
The western ribbon snake is a slender, nonvenomous species common near water in Houston. It features three yellow or white stripes running lengthwise on a dark body. Ribbon snakes primarily feed on amphibians and small fish.
6. Plains Black-Headed Snake (Tantilla nigriceps)
This small, secretive snake has a glossy black head contrasting with a tan or light brown body. It is nonvenomous and often found under rocks or logs in Houston’s woodlands. Their diet mainly consists of insects and small invertebrates.
7. Western Diamondback Rattlesnake (Crotalus atrox)
The western diamondback rattlesnake is the most commonly encountered venomous snake in Houston’s outskirts. It is easily identified by its diamond-shaped dorsal pattern and distinctive rattle. This snake plays a vital role in controlling rodent populations but should be treated with caution.
8. Texas Spotted Whiptail (Aspidoscelis gularis)
While technically a lizard, the Texas spotted whiptail is often mistaken for a snake due to its slender body and rapid movements. It thrives in Houston’s dry, open habitats and is an active daytime forager of insects.
9. Coachwhip (Masticophis flagellum)
The coachwhip is a fast, slender, nonvenomous snake known for its whip-like tail. In Houston, it prefers open fields and sparse woodlands. It feeds mainly on small mammals, birds, and other reptiles.
10. Rough Green Snake (Opheodrys aestivus)
This slender, bright green snake is arboreal and often found in Houston’s shrubs and trees near water. Nonvenomous and shy, it feeds mainly on insects and spiders, making it a beneficial garden inhabitant.
11. Western Rat Snake (Pantherophis obsoletus)
Closely related to the Texas rat snake, the western rat snake is a nonvenomous constrictor that helps keep rodent populations in check. It is commonly found in suburban Houston and can climb trees and structures with ease.
12. Speckled Kingsnake (Lampropeltis holbrooki)
The speckled kingsnake is a nonvenomous species recognizable by its black body with yellow or white speckles. It thrives in Houston’s varied habitats and is known to prey on other snakes, including venomous species.
13. Western Mud Snake (Farancia abacura reinwardtii)
A rare, aquatic snake found in Houston’s wetlands, the western mud snake is nonvenomous and primarily feeds on amphibians. Its glossy black body with red or pink belly makes it distinctive and often overlooked.
14. Glossy Snake (Arizona elegans)
The glossy snake is a slender, nocturnal species with smooth scales and a light brown or tan coloration. It inhabits Houston’s drier, sandy environments and hunts lizards and small rodents.
15. Texas Indigo Snake (Drymarchon melanurus erebennus)
The Texas indigo snake is a large, nonvenomous snake known for its glossy black or bluish-black scales. It is a powerful constrictor that preys on venomous snakes, rodents, and birds, making it a beneficial species in Houston’s ecosystem.
16. Rough Earth Snake (Haldea striatula)
This small, secretive snake is brown or gray with a smooth texture and is often found burrowing in Houston’s moist soils. It is nonvenomous and feeds mainly on earthworms and soft-bodied insects.
17. Western Mud Turtle Snake (Nerodia erythrogaster neglecta)
Commonly called the blotched water snake, this nonvenomous species frequents Houston’s freshwater habitats. It has a blotchy brown and black pattern and feeds mainly on fish and amphibians.
18. Ringneck Snake (Diadophis punctatus)
The ringneck snake has a distinctive yellow or orange ring around its neck and a dark gray to black body. It is nonvenomous and commonly found under logs or leaf litter in Houston’s woodlands, feeding on amphibians and small reptiles.
19. Texas Coral Snake (Micrurus tener)
Similar to the eastern coral snake but slightly larger, the Texas coral snake is venomous and rare in Houston. It features bright red, black, and yellow banding and prefers dense, wooded habitats.
20. Western Coachwhip (Masticophis flagellum testaceus)
A subspecies of the coachwhip, this snake is known for its speed and agility. It has a tan to reddish coloration and is often seen in Houston’s open plains hunting small animals.
21. Yellow-bellied Racer (Coluber constrictor flaviventris)
The yellow-bellied racer is a fast, nonvenomous snake with a greenish or bluish back and bright yellow underside. It is diurnal and frequently spotted in Houston’s open areas chasing down lizards and rodents.
22. Western Patch-nosed Snake (Salvadora hexalepis)
This slender snake has a distinctive patch-like scale on its nose. It is nonvenomous and preys on lizards and small snakes in Houston’s dry, sandy habitats.
23. Speckled Racer (Coluber constrictor priapus)
The speckled racer is a fast-moving, slender snake with dark coloring and speckled patterns. It is nonvenomous and helps control pest populations in Houston’s suburban and wild areas.
24. Banded Water Snake (Nerodia fasciata)
Often mistaken for venomous species, this nonvenomous snake has dark bands across its body and is found near Houston’s lakes and ponds. It feeds primarily on fish and amphibians.
25. Texas Brown Snake (Storeria dekayi texana)
This small, nonvenomous snake has a brown or gray body with subtle stripes or spots. It is common in Houston’s gardens and urban areas, feeding on earthworms and slugs.
26. Prairie Kingsnake (Lampropeltis calligaster)
The prairie kingsnake is a nonvenomous constrictor with a light tan body and dark blotches. It is beneficial in Houston for controlling rodents and is often mistaken for rattlesnakes because of its defensive behavior.
27. Texas Coral Snake (Micrurus tener)
Though rare, the Texas coral snake is one of Houston’s venomous species. It has a distinctive red, yellow, and black banding pattern and prefers dense, forested habitats. Its venom is neurotoxic but bites are extremely rare due to its reclusive nature.
How to Choose
When identifying or choosing which Houston snakes to learn about or interact with, consider factors such as venom potential, habitat, and behavior. Venomous snakes like the Western cottonmouth, eastern coral snake, and western diamondback rattlesnake require caution but play important ecological roles. Nonvenomous snakes, including rat snakes and kingsnakes, are generally harmless and beneficial for pest control. Habitat preference can also guide you: water snakes frequent aquatic environments, while species like coachwhips and racers prefer open fields. Understanding these differences helps ensure safety and appreciation.
Frequently Asked Questions
Are there many venomous snakes in Houston? Houston is home to a few venomous snakes, including the Western cottonmouth, western diamondback rattlesnake, and eastern and Texas coral snakes. However, they are generally not aggressive and bites are rare.
What should I do if I see a snake in my yard? Most snakes in Houston are harmless and help control pests. It’s best to leave them alone and allow them to move away naturally. If unsure, keep a safe distance and contact local animal control for assistance.
How can I tell a venomous snake from a nonvenomous one? Venomous snakes in Houston often have triangular heads, elliptical pupils, and distinctive color patterns like the diamondback’s diamonds or coral snake’s red-yellow-black bands. However, many nonvenomous snakes mimic these traits, so caution and expert identification are advised.
Do snakes in Houston hibernate? Yes, many Houston snakes enter a period of brumation (a hibernation-like state) during the colder months, typically from late fall through early spring, to conserve energy.
Can snakes be kept as pets in Houston? Some native nonvenomous snakes can be legally kept as pets with proper permits, but venomous snakes require special licenses. Always check local regulations and ensure you have proper knowledge before keeping snakes.
Final Thoughts
Houston’s rich natural environment supports a fascinating diversity of snakes, each playing a unique role in the ecosystem. Recognizing these 27 species can enhance your appreciation and safety when encountering snakes in the wild or near your home. Remember, most snakes pose little threat and contribute to controlling pests, making them valuable neighbors in Houston’s urban and natural landscapes.
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