Greater Short-horned Lizard

Greater Short-horned Lizard

Phrynosoma hernandesi

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Saguaro National Park
42 Verified sightings at Saguaro National Park From 2019 to 2026
306 Verified sightings across all 4 parks From 2019 to 2026
May Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Greater Short-horned Lizard

The greater short-horned lizard (Phrynosoma hernandesi), also commonly known as the mountain short-horned lizard or Hernández's short-horned lizard, is a species of lizard in the family Phrynosomatidae. The species is endemic to western North America. Like other horned lizards, it is often called a "horned toad" or "horny toad", but it is not a toad at all. It is a reptile, not an amphibian. It is one of five native species of lizards in Canada.

The genus Phrynosoma, means toad-bodied. The specific name, hernandesi, honors Francisco Hernández (1514–1587), a Spanish physician who wrote an early account of a horned lizard, which was published in 1615. The greater short-horned lizard is the most widely distributed horned lizard in North America and occurs in the widest range of habitats: West into central Nevada, east into North and South Dakota, north to southern Saskatchewan and Alberta, and then south into eastern New Mexico to central Mexico, with a few pockets in Trans-Pecos Texas. This species of lizard is mostly an arid mountain dweller living in the range of 900–11,300 feet (170–3440 m). It is the only member of its genus in Wyoming, which counts... Wikipedia →

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Grand Canyon National Park 🇺🇸 United States
~40%
2 Zion National Park 🇺🇸 United States
~30%
3 Guadalupe Mountains National Park 🇺🇸 United States
~20%
4 Saguaro National Park 🇺🇸 United States
~10%

Quick answers

What are the chances of seeing a Greater Short-horned Lizard in Saguaro National Park?

About 10% of wildlife watchers report a Greater Short-horned Lizard sighting in Saguaro National Park, based on 42 verified sightings from GBIF citizen-science data.

When is the best time to see Greater Short-horned Lizard in Saguaro National Park?

May has the highest sighting rate for Greater Short-horned Lizard in Saguaro National Park in our monthly data.

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