Friday, January 24, 2014

Horned Lizard

Horned Lizard
Horned lizards are a genus of lizards which are the type genus of the family Phrynosomatidae. The horned lizard is popularly called a "horned toad", "horny toad" or "horned frog", yet it is neither a toad nor a frog. The popular names come from the lizard's rounded body and blunt snout, which make it resemble a toad or frog . The spines on its back and sides are made from modified scales, whereas the horns on the heads are true horns of 15 species of horned lizards in North America, eight are native to the United States. The largest-bodied and most widely distributed of the US species is the Texas horned lizard.Horned lizards are morphologically similar to the Australian thorny devil  but are only distantly related. They also have other similarities such as being sit-and-wait predators and preying upon ants so the two species are considered a great example of convergent evolution


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