---
title: "Ridge-nosed Rattlesnake"
description: "Crotalus willardi — Répteis. Common names: ridge-nosed rattlesnake, Willard's rattlesnake, Willard's rattler"
canonical: https://animalchecklist.com/pt/animal/ridge-nosed-rattlesnake
last_updated: 2026-09-20
---

# Ridge-nosed Rattlesnake

> Crotalus willardi — Répteis. Common names: ridge-nosed rattlesnake, Willard's rattlesnake, Willard's rattler
Crotalus willardi is a venomous pit viper species found in the southwestern United States and Mexico.

- Scientific name: *Crotalus willardi*
- Category: `reptiles` (Répteis)
- Habitats: `mountains` (Montanhas)
- iNaturalist observations: 609
- Wikidata: [Q1517877](https://www.wikidata.org/wiki/Q1517877)
- iNaturalist taxon: [30705](https://www.inaturalist.org/taxa/30705)

## Names

- en: Ridge-nosed Rattlesnake
- de: Willard-Klapperschlange
- es: Cascabel de nariz surcada de la Sierra Madre Occidental
- pl: Grzechotnik graniopyski

## Countries with the most observations

US (372), MX (136)

## Summary

Common names: ridge-nosed rattlesnake, Willard's rattlesnake, Willard's rattler
Crotalus willardi is a venomous pit viper species found in the southwestern United States and Mexico. This snake is found mainly in the "sky island" region. The IUCN reports this snake's conservation status as being of Least Concern. It is the official state reptile of Arizona.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Crotalus_willardi

## Photo

![Ridge-nosed Rattlesnake](https://animalchecklist.com/img/animals/ridge-nosed-rattlesnake/medium.jpg)

Photo: Alejandro Sigala Chávez · CC0 · inaturalist — https://www.inaturalist.org/observations/194698537

## Machine access

`GET https://animalchecklist.com/api/v1/animals/ridge-nosed-rattlesnake?lang=pt` — see [openapi.json](https://animalchecklist.com/openapi.json).