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乌龟、蜥蜴、壁虎等属于爬行动物,它们的共同特征是:体表覆盖角质鳞片或骨板;四肢柔软,趾端有爪适于爬行;用肺呼吸;卵外包着硬壳……
Turtles, lizards, geckos and other belong to the reptiles, their common characteristics are: the body surface covered horny scales or bone plate; limbs soft, toe claw suitable for crawling; breathing with the lungs;