Texas Horned Lizard
⚡ Key Facts & Quick Answers (AEO Summary)
- Taxonomic Class: Reptiles (Reptilia)
- Dietary Niche: Insectivore (Harvester ants)
- Max Speed: 8 km/h (5 mph)
- Adult Weight: 25 - 90 grams
- Typical Lifespan: 5 - 8 years
- Primary Habitat: Sandy desert dunes, arid scrublands, flat open plains
- Native Region: Southwestern United States, Northern Mexico
- IUCN Red List: Least Concern
📊 Physical & Biological Metrics
🧬 Scientific Taxonomy & Biological Classification
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Reptilia |
| Order | Squamata |
| Family | Phrynosomatidae |
| Genus | Phrynosoma |
| Species Binomial | Phrynosoma cornutum |
📖 1. Species Overview
Often called the 'Horny Toad', the Texas Horned Lizard is a flat-bodied reptile covered in sharp spikes. To defend against predators like coyotes, they can squirt streams of toxic blood from the corners of their eyes.
🦿 2. Physical Appearance, Anatomy & Adaptations
Flattened body covered in sharp spikes, a crown of prominent horns on the skull, and tan-grey camouflage patterning.
🗺️ 3. Habitat, Geographic Distribution & Territorial Range
Diurnal desert dwellers. They bury themselves in loose sand to stay warm at night and hibernate in winter.
🥩 4. Diet, Feeding Strategy & Hunting Tactics
Sit next to harvester ant nests, consuming up to 70 ants a day with their sticky tongue, utilizing specialized stomach enzymes to neutralize ant venom.
🐣 5. Reproduction, Lifecycle & Social Hierarchy
Females dig sand tunnels to lay 15-40 eggs in early summer, which hatch in 45 days.
🛡️ 6. Conservation Status, Population Threats & Protection
Least Concern, though declining in parts of its range due to pesticide spraying of harvester ants and domestic pets.
💡 Fascinating Facts & Trivia
- When threatened, they can increase blood pressure in their head to rupture capillaries in their eyelids, squirting blood up to 3 feet.
- Their blood contains a foul-smelling chemical that is toxic to dogs and coyotes, causing them to drop the lizard instantly.
❓ Frequently Asked Questions (FAQ)
Direct authoritative answers regarding the biology, feeding habits, and habitat of the Texas Horned Lizard.
The Texas Horned Lizard is scientifically classified as Phrynosoma cornutum. It belongs to the genus Phrynosoma within the family Phrynosomatidae, class Reptilia, and phylum Chordata.
In the wild, Texas Horned Lizards inhabit Sandy desert dunes, arid scrublands, flat open plains. Their native geographic range primarily spans Southwestern United States, Northern Mexico.
The Texas Horned Lizard is classified as a Insectivore. It feeds primarily on specialized nutrients suited to its ecological niche in Sandy desert dunes, arid scrublands, flat open plains.
A Texas Horned Lizard can achieve top speeds of 8 km/h (5 mph) and weighs approximately 25 - 90 grams. Its expected natural lifespan is 5 - 8 years.
The Texas Horned Lizard (Phrynosoma cornutum) is currently designated as Least Concern on the IUCN Red List of Threatened Species.
Cite this Article
FaunaWiki Zoological Database (2026). "Texas Horned Lizard (Phrynosoma cornutum) Species Profile."
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