Lizard wiki:
>For other uses, see Lizard (disambiguation). Many, see text. Lizards are reptiles of the order Squamata, which they share with the snakes (Ophidians). They are usually four-legged, with external ear openings and movable eyelids. Species range in adult length from a few centimeters (some Caribbean geckos) to nearly three meters (Komodo dragons).Some lizard species called "glass snakes" or "glass lizards" have no functional legs, though there are some vestigial skeletal leg structures. They are distinguished from true snakes by the presence of eyelids and ears.
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Monkey wiki:
>For other uses, see Monkey (disambiguation). A monkey is any member of two of the three groupings of simian primates. These two groupings are the New World and Old World monkeys of which together there are nearly 200 species. Because of their similarity to monkeys, apes such as chimpanzees and gibbons are sometimes incorrectly called monkeys. Also, a few monkey species have the word "ape" in their common name. Because they are not a single coherent group, monkeys do not have any important characteristics that they all share and are not shared with the remaining group of simians, the apes.
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Mule wiki:
[her uses of the word mule, see mule (disambiguation). In its common modern meaning, a mule is the offspring of a male donkey and a female horse. Compare hinny â the offspring of a male horse and a female donkey. The term "mule" (Latin mulus) was formerly applied to the offspring of any two creatures of different species â in modern usage, a "hybrid". The mule, easier to breed and usually larger in size than a hinny, has monopolised the attention of breeders. The chromosome match-up more often occurs when the jack (male donkey) is the sire and the mare (female horse) is the dam. It has been known for people to let a stallion (male horse) run with a jenny (female donkey) for as long as six years before getting her pregnant. Male mules and hinnies are both sterile, as are almost all female mules and hinnies (see External links). The sterility is attributed to the different number of chromosomes the two species have. Donkeys have 62 chromosomes, while horses have 64.
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