Obviously wild animals can’t get their fur trimmed every now and then so how does it stay at a relatively consistent length? Does animal fur start growing when animals are born and then just stop at one point?
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Most hair actually stops growing after a certain length and falls out to be replaced with a new hair. Most of our body hair is like this as it is for most animals with fur. The hair we grow on top of our head is unusual because it doesn’t really have a maximum length.
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