(c) František Bednár, all rights reserved, uploaded by František Bednár
Species
Texas Horned Lizard
species
角蜥（學名：Phrynosoma）是角蜥科下的一屬蜥蜴。牠們的身體圓形，吻頓。背上及兩側有棘，這些棘都是變化了的鱗片，而頭上有角。在北美洲共有14個物種，單在美國就有8種。在美國體型最大及分佈最廣的是德州角蜥。
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Wikidata facts
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- Horned lizard 032507 kdh.jpg
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- Phrynosoma
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- Phrynosoma
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Article
Phrynosoma, whose members are known as the horned lizards, horny toads, or horntoads, is a genus of North American lizards and the type genus of the family Phrynosomatidae. Their common names refer directly to their horns or to their flattened, rounded bodies (squat bodied), and blunt snouts.
The generic name Phrynosoma means "toad-bodied". In common with true toads (amphibians of the family Bufonidae), horned lizards tend to move sluggishly, often remain motionless, and rely on their remarkable camouflage to avoid detection by predators. They are adapted to arid or semiarid areas. The spines on the lizard's back and sides are modified reptile scales, which prevent water loss through the skin, whereas the horns on the head are true horns (i.e., they have a bony core). A urinary bladder is absent. Of the 21 species of horned lizards, 15 are native to the US. The largest-bodied and most widely distributed of the American species is the Texas horned lizard.