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Texas Horned Lizard
Phrynosoma cornutum
35.9222, -97.28
Field Notes
Description:
One of many species of horned lizard, the Texas Horned Lizard is one of two found in Oklahoma. Typical of the species this one was 2.75 in. nose to vent. It had two large spikes on the back of the head. There were smaller spines around the perimeter of the back and sides of the head as well as a row low along each side of its abdomen. The legs and tail also have a row of sharp scales. There is also a white stripe down the back from the neck to the end of the tail.The overall color was yellow brown to brown.
Habitat:
Found in a rock bed outside a hotel in central Oklahoma, USA (413 masl).
Notes:
One unusual defense mechanism involves the flooding of their ocular sinuses, tissues found below their eye, with blood. When a horned lizard feels threatened by a predator, its final defense response is to shoot blood from these flooded sinuses and out its eye sockets. As a result, the predator is often frightened and flees. The lizard also uses this mechanism to remove foreign particles from the surface of its eyes (AskNature.org)
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