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lizard

lizard Reptile found on every continent; there are 20 families, c.3000 species. Most have a scaly, cylindrical body with four legs, a long tail and moveable eyelids. Some species such as glass snakes, slow-worm and some skinks, have reduced or absent limbs. Most lizards are terrestrial, and many live in deserts. There are also semi-aquatic and arboreal forms. Many lizards have an autotomic defence mechanism – they shed their tail when attacked. Most lay eggs rather than bear live young. They feed mainly on insects and vegetation. They range in size from the c.5cm (2in) gecko to the 3m (10ft) komodo dragon. Order Squamata; sub-order Sauria. See also chameleon; gecko; iguana; monitor

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lizard

liz·ard / ˈlizərd/ • n. a reptile that typically has a long body and tail, four legs, movable eyelids, and a rough, scaly, or spiny skin. • Suborder Lacertilia (or Sauria), order Squamata: many families.

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lizard

lizard XIV. ME. lesard(e) — OF. lesard, -arde (mod. léz-), repr. L. lacertus, lacerta, which appears to be identical with lacertus muscle.

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lizard

lizard See SAURIA.

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lizard

lizard •landward • backward •Edward, headward •hellward • heavenward • leftward •northwestward, southwestward, westward •wayward •leeward, seaward •eastward, northeastward, southeastward •windward • inward • cityward •skyward • sideward • rightward •onward •forward, henceforward, shoreward, straightforward, thenceforward •awkward • northward •downward, townward •outward • southward • poleward •homeward • oceanward • Woodward •sunward • upward • frontward •rearward • afterward • earthward •halyard •lanyard, Spaniard •untenured • steelyard • vineyard •poniard •haphazard, hazard, mazzard •blizzard, gizzard, izard, lizard, vizard, wizard •buzzard

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Lizard

LIZARD

LIZARD (Heb. לְטָאָה), reptile included among the eight creeping things that are prohibited as food and whose dead body defiles anything with which it comes into contact (Lev. 11:30–39). Talmudic literature states that its tail moves convulsively when cut off (Oho. 1:6), that in intense heat it remains immovable, stirring only when water is poured over it (Pes. 88b). Both features are characteristic of various species of lizard, but the reference is apparently mainly to those belonging to the family Lacertidae, of which four genera (that include ten species) are to be found in Israel. Of the Lacerta, the most common are the brown lizard (Lacerta laevis) and the great green lizard (Lacerta viridis) which is the largest and most beautiful of this family, is commonly found in the mountainous regions, and feeds on insects. The dab lizard, which belongs to another family, is apparently to be identified with the צָב (ẓav), likewise included among the unclean creeping things (see *Tortoise).

bibliography:

Lewysohn, Zool, 221f., no. 272; J. Feliks, The Animal World of the Bible (1962), 96; M. Dor, Leksikon Zo'ologi (1965), 177f. add. bibliography: Feliks, Ha-Ẓome'ah, 248.

[Jehuda Feliks]

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lizard

lizard, a reptile of the order Squamata, which also includes the snake. Lizards form the suborder Sauria, and there are over 3,000 lizard species distributed throughout the world (except for the polar regions), with the greatest number found in warm climates. They range in size from gecko species under 3/4 in. (2 cm) long to the 10-ft (3-m) Komodo dragon (see monitor) of SE Asia.

Lizards typically have four legs with five toes on each foot, although a few, such as the worm lizard and the so-called glass snake, are limbless, retaining only internal vestiges of legs. Lizards are also distinguished from snakes by having ear openings, movable eyelids, and less flexible jaws. As in snakes, there is a chemosensory organ opening in the roof of the mouth. The tongue, which may be short and wide, slender and forked, or highly extendible, conveys particles from the environment to this organ. The skin of the lizard is scaly and in most species is molted in irregular patches. Members of several lizard families, notably the chameleons, undergo color changes under the influence of environmental and emotional stimuli.

Many lizards are arboreal, and many terrestrial species are well adapted for climbing. They are often fast runners, some achieving speeds of over 15 mi (24 km) per hr. Some are adapted for burrowing. Most can swim and a few lead a semiaquatic existence, among them the single marine species, an iguana of the Galapagos Islands. Gliding forms, the flying dragons, are found in the forests of SE Asia. The gila monster and the related beaded lizard of the North American deserts are the only known poisonous lizards; some other lizards, such as the lace monitor of Australia, produce a nonfatal venom. Despite folklore, the bite of the gecko is not poisonous. Members of most species are carnivorous, feeding especially on insects, but some are herbivorous or omnivorous.

Fertilization is internal in lizards; males have paired copulatory organs, characteristic of the order. In most species females lay eggs, which they bury in the ground, but in some the eggs are incubated in the oviducts and hatched as they are laid. In both types the young have a special temporary tooth for rupturing the shell. In a few species there is true viviparity, or live birth, with the young nourished by a simple placenta.

The greatest number of species in the United States is found in the South and West. The majority are members of the iguana family, including the collared lizards, swifts, utas, horned lizards (popularly known as horned toads), and the so-called American chameleon, or anole. These are day-active lizards commonly seen basking on rocks. Most are valuable destroyers of insects.

Lizards are classified in the phylum Chordata, subphylum Vertebrata, class Reptilia, order Squamata, suborder Sauria.

See W. M. Milstead, ed., Lizard Ecology (1967); H. S. Fitch, Reproductive Cycles of Lizards and Snakes (1970); B. R. Headstrom, Lizards as Pets (1971).

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