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Most species are medium-sized among monitors, with adults measuring 1 to 2 m (3 ft 3 in to 6 ft 7 in) in length and rarely exceeding weights of 10 kg (22 lb). [6] In contrast, modern perenties can grow to lengths of 2 m (6 ft 7 in) and, although being exceptionally lean among large lizards, still exceeds weights of over 17 kg (37 lb), easily ...
An adult salamander generally resembles a small lizard, having a basal tetrapod body form with a cylindrical trunk, four limbs, and a long tail. Except in the family Salamandridae, the head, body, and tail have a number of vertical depressions in the surface which run from the mid-dorsal region to the ventral area and are known as costal ...
Scales may be piliform (hairlike) or flattened. The body or "blade" of a typical flattened scale consists of an upper and lower lamella with an air space in between. The surface towards the body is smooth and known as the inferior lamella. The upper surface, or superior lamella, has transverse and longitudinal ridges and ribs.
In many cases the cast skin peels backward over the body from head to tail, in one piece like an old sock. A new, larger, and brighter layer of skin has formed underneath. [ 5 ] [ 7 ] An older snake may shed its skin only once or twice a year, but a younger snake that is still growing may shed up to four times a year.
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Lizard is the common name used for all squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, [1] ranging across all continents except Antarctica, as well as most oceanic island chains.
The Komodo dragon has a tail as long as its body, as well as about 60 frequently replaced, serrated teeth that can measure up to 2.5 cm (1 in) in length. Its saliva is frequently blood-tinged because its teeth are almost completely covered by gingival tissue that is naturally lacerated during feeding. [ 29 ]
Argentine black and white tegu lizards are typically hatched at the beginning of spring. When they hatch they are about ten grams and grow up to eight kilograms within four or five years, experiencing a nearly eight-hundred-fold increase in body size. During this time their diet changes from insects to small vertebrates, eggs, carrion, and fruits.