[impendingchange]

Anyone know what the first human animals to give each other names? Just asking.

[anakaine]

Humans are animals. There are no humans that are not animals. Non-human animals are animals which are not humans, and thus the headline is gramatically and scientifically correct. It is unclear what you are trying to achieve by this comment.

[4death4]

Remove non-humans. “First animals to do so.” Wait… that’s not correct, because humans are animals and they name each other. You’ve created a false dichotomy.

[Scaevolus]

It happened in prehistory along with the first language developments, but archeologists are keeping track of the oldest known name: https://en.wikipedia.org/wiki/Kushim_(Uruk_period)