In general, a leg is any of the parts of an animal's body that support the rest of the body above the ground, and are used for locomotion. Anatomists often use "leg" to refer to the portion from the knee down, and use "thigh" for the knee up.
Legs mostly come in even-numbered quantities that are characteristic of some taxonomic groups:
In most quadrupeds and bipeds, legs consist of two main parts, attached to the body at one end, and to the foot at the other, and jointed at the knee.
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