Cats and Dogs clean themselves by licking. So how did ancient humans practice hygiene?

by USS1
Searocksandtrees

Hi OP, can you clarify what you mean by "ancient"? Do you mean, for example, Ancient Greece, or are you thinking more about deep prehistory, as in early Homo Sapiens? If the latter, the question would be worth x-posting to our sister sub /r/AskAnthropology.