Rahul Sharma (Editor)

Earless lizard

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Kingdom  Animalia
Subphylum  Vertebrata
Order  Squamata
Phylum  Chordata
Class  Reptilia
Suborder  Sauria
Earless lizard wwwreptilesofazorgGraphicsLizardsHOLMAC04ajpg
Representative species  Greater earless lizard, Holbrookia maculata, Holbrookia lacerata, Holbrookia propinqua, Holbrookia subcaudalis

Earless lizards are two genera of small lizards native to the semi-arid and grassland habitats of the southwestern United States and Mexico. The genus Cophosaurus and the genus Holbrookia are both characterized by having no external ear openings, presumably to prevent sand from entering the body as they dig.


Earless lizard Elegant Earless Lizard Holbrookia elegans Reptiles of Arizona

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Defense mechanism

Earless lizard Spottail earless lizard WildEarth Guardians

Earless lizards have a peculiar defense mechanism which is coupled to their cold-blooded life style. They have a small opening on the top of their head called a 'blood sinus' which helps the lizard to gain heat quickly during daytime. However the blood can also be channelized to the eyes of the lizard when a predator looms close by, efficiently spitting the blood onto the predator giving it enough time to escape.

Geographic range

Earless lizard Greater Earless Lizard Cophosaurus texanus

Earless lizards are found from the southwestern and central United States, in the states of Texas, Arizona, New Mexico, Utah, Colorado, Kansas, Oklahoma, and as far north as Nebraska, South Dakota, and Wyoming. They are also found in Mexico, in the states of Sonora, Chihuahua, Coahuila, Sinaloa, Durango, Zacatecas, San Luis Potosí, Nuevo León, Tamaulipas and Veracruz.

Earless lizard Elegant Earless Lizard Tucson Herpetological Society
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Earless lizard Wild Herps Greater Earless Lizard Cophosaurus texanus
Earless lizard Navajo Zoo Lesser Earless Lizards
Earless lizard Elegant Earless Lizard Tucson Herpetological Society


Earless lizard Wikipedia

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