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The hairs on a spider's legs are used primarily to smell. Spiders don't have ears, noses or taste buds, so they rely on these hairs to sense their surroundings, if something is moving nearby, and if something is edible. These hairs are called thrichobotria.
They're not whiskers, they're reinforced hairs similar to whiskers. Not only are the hairs located on their front legs, but also over their eyes.
Flatworms/platyhelminthes have no legs in all their classes. It has cells which are called Cillia, which resemble hairs on a superficial level, which are used to move, in addition to two layers of muscles.
I know you might be a boy but still. People get hair on their leg because it grows naturaly.
if the grey hairs are taking over the white around the legs, neck and hindquarters, (aka bottom) they are most likely known as dappled grey.
so that we can shave them
cause you dont have a head
yes.
Yes.
diving beetle
yes they have tiny millimeter hairs on their legs.
yes. they hear by using the hairs on their legs.