Colubridae
Thornscrub Hook-nosed Snake
HarmlessGyalopion quadrangulare






6 photographs of the Thornscrub Hook-nosed Snake. © Sinaloa Silvestre.
The Thornscrub Hook-nosed Snake (Gyalopion quadrangulare) is a non-venomous snake in the Colubridae family, recorded in 2 countries.
- Family
- Colubridae
About the Thornscrub Hook-nosed Snake
Gyalopion quadrangulare, the thornscrub hook-nosed snake or desert hook-nosed snake, is a species of non-venomous snake in the family Colubridae. The species is found in Arizona in the United States and Mexico.
Adapted from Wikipedia, available under CC BY-SA.
Frequently asked: Thornscrub Hook-nosed Snake
- Is the Thornscrub Hook-nosed Snake venomous?
- No. The Thornscrub Hook-nosed Snake (Gyalopion quadrangulare) is non-venomous and is not considered dangerous to humans. Like most snakes, it will retreat rather than bite when given the chance.
- Is the Thornscrub Hook-nosed Snake poisonous?
- Snakes are venomous, not poisonous. "Poisonous" means harmful to eat or touch; "venomous" means injecting toxins through a bite. The Thornscrub Hook-nosed Snake is neither poisonous nor venomous.
- Is the Thornscrub Hook-nosed Snake dangerous?
- The Thornscrub Hook-nosed Snake is not dangerous to humans. It has no medically significant venom and bites only defensively if cornered or handled.
- Where does the Thornscrub Hook-nosed Snake live?
- The Thornscrub Hook-nosed Snake has verified records in 2 countries, including Mexico, United States of America. See the distribution section below for its full range.
Where it is found
By U.S. state
More Colubridae snakes
Chihuahuan Hook-nosed SnakeGyalopion canum
Common Garter SnakeThamnophis sirtalis
Common WatersnakeNerodia sipedon
Gopher SnakePituophis catenifer
DeKay's BrownsnakeStoreria dekayi
North American RacerColuber constrictor
Ring-necked SnakeDiadophis punctatus
Western Terrestrial Garter SnakeThamnophis elegans
Classification
How scientists group this snake, from the broadest category down to the exact species. Each step narrows to its closest relatives.
- OrderThe broad group of scaled reptiles: all snakes and lizards
- Squamata
- FamilyA group of related snakes that share key traits
- Colubridae
- GenusA close-knit group of very similar species
- Gyalopion
- SpeciesThis exact snake, named in the two-part scientific name
- Gyalopion quadrangulare
Keep learning
- What to Do If You Find a SnakeFound a snake at home or on a trail? Here is how to stay calm, give it space, identify it safely, and know when to call a professional.
- Venomous vs Nonvenomous: How to Tell the DifferenceThe folk rules for telling venomous snakes apart, where each one fails, and why location-based identification beats guessing by sight.
- What Is a Snake? Anatomy and the BasicsA clear overview of what makes a snake a snake: limbless body plan, anatomy, evolution from lizards, species diversity, and why they are ectothermic.
- How to Keep Snakes Out of Your Yard and HomeA practical guide to keeping snakes out of your yard and home using habitat changes that work, plus what to skip and what to do if one shows up.
Distribution from GBIF & iNaturalist. Venom status per CDC. Background: Wikipedia. Informational only. Never handle a snake to identify it.