Why does an ant stop for awhile when they meet another ant as if they’re exchanging handshakes?

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Why does an ant stop for awhile when they meet another ant as if they’re exchanging handshakes?

In: Biology

That’s kinda what they’re doing. It’s like dogs sniffing one another’s butts; scent carries a lot of info dogs and ants use to communicate. For dogs it’s mostly about health, and for ants it’s mostly about food or defense.