ELi5: Before sheep shearing by humans was common, did all sheep just grow large, unmanageable coats that caused them to overheat or attracts pests and just eventually die?
No. Wild sheep still exist and they handle not being sheared just fine.
Ever since we domesticated sheep we’ve been selectively breeding them to increase the amount of wool produced. Just like we bred wolves into something as idiotic as chihuahuas.
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