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Hedgehog.
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The bristles of a paint brush do not come from a tree they are either natural or synthetic hair.
awns spines, thorns
A plant with bristles is typically called a "bristly plant" or "bristled plant." These bristles can be used as a defense mechanism against herbivores or for dispersing seeds.
Nematodes are covered in many sensory bristles and papillae that provides a sense of touch. Along with the sensory bristles, on the head there are two small pits, or amphids. These carry many nerve cells that react when the nematode moves into something.
Bristles were often made out of the bristles of boar before plastic bristles were invented. They might have also made them out of types of plant.
The different types of bristles used in paint brushes are synthetic bristles, natural bristles (such as hog hair or sable), and blended bristles (a mix of synthetic and natural fibers).
Bristles is what they are called
A toothbrush also has bristles.