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Plestiodon
''Plestiodon'' is the name for a genus of lizards formerly referred to as ''Eumeces'', except those now placed in ''Mesoscincus''.
The genus ''Plestiodon'' are skinks (family Scincidae). They are secretive, agile animals with a cylindrical body covered with smooth, shiny scales.
The common name for these lizards with a blue tail is the common five-lined skink.
==Defensive mechanism==
The conspicuous coloring is a survival trait: it attracts a predator’s attention to the tail of the animal, which will break off when grabbed. A skink thus often manages to escape and hide under some rock, log, or fallen leaves while the predator still contemplates the wildly thrashing severed tail. (This is an instance of what is called autotomy: voluntarily shedding a body part in order to escape, and later re generating the body part.) After the tail regenerates, it usually has the same color as the rest of the body and is typically shorter than the original tail. In some species, regrown tails are pinkish. A regrown tail has a cartilaginous rod for support instead of vertebrae.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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