Lizards
兒子Writing作業
大意如下：
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蜥蜴在爬行動物中是個有鱗目的動物，通常有四條腿和外耳。蜥蜴往往有四條腿與外皮系統，包括以頭骨組成的方形骨頭。蜥蜴擁有外耳，可以移動大部分眼皮。由於其光滑、光亮的外觀，一些蜥蜴可能出現泥濘或濕滑，他們的皮膚非常乾燥的原因是缺乏毛孔排泄水和油。
大多數蜥蜴是卵生，但也有一些物種是胎生，牠也能夠再生肢體或遺失的尾巴。一些蜥蜴，包括玻璃蜥蜴和腿蜥蜴，雖然沒有腿但有一些殘留的功能結構。
他們是有別於同蛇的眼瞼、耳朵和一條尾巴，也可以中斷做為防禦用。許多蜥蜴是好的登山或快速短跑運動員。
許多蜥蜴可以改變顏色以回應他們的環境。最熟悉的是變色龍，但更細微的顏色變化發生在其他蜥蜴品種，如美國變色龍，房子變色龍。
蜥蜴屬石龍子家族，包括藍尾石龍，往往有光澤、斑斕的尺度，並出現潮濕。 |
Lizards are reptiles of the order Squamata, normally possessing four legs and external ear openings. The adult length of species within the order range from a few centimeters (some Caribbean geckos) to nearly three meters (Komodo Dragons).
Lizards are reptiles, often four-legged, with an integumentary system comprising scales, with a skull composed of quadrate bones. Lizards possess external ears and most have movable eyelids. Encompassing forty families, there is tremendous variety in color, appearance and size. Due to their smooth, shiny appearance, some lizards can appear slimy or slippery although their skin is actually very dry due to a lack of pores to excrete water and oils.
Lizards have scales on their skin which may be tubercular or have ossified encrustations called osteoderms.[1]
Most lizards are oviparous, though a few species are viviparous. Many are also capable of regeneration of lost limbs or tails.
Some lizard species, including the glass lizard and legless lizards, have some vestigial structures though no functional legs. They are distinguished from true snakes by the presence of eyelids and ears and a tail that can sometimes break off as a physical defence mechanism. Many lizards are good climbers or fast sprinters. Some can run bipedally, such as the collared lizard and the world's fastest lizard, the spiny-tailed iguana of the genus Ctenosaura.
Many lizards can change color in response to their environments or in times of stress. The most familiar example is the chameleon, but more subtle color changes occur in other lizard species as well such as the anole, also known as the "American chameleon," "house chameleon" or "chamele".
Lizards in the Scincomorpha family, which include skinks (such as the blue-tailed skink), often have shiny, iridescent scales that appear moist. They are dry-skinned and generally prefer to avoid water. All lizards are capable of swimming if needed and a few (such as the Nile monitor) are quite comfortable in aquatic environments.
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