A honey bee uses symbology to give directions to food sources to other bees(part of a larger article)...
"But perhaps the best-known and most insane bit of intelligence from bees is what’s known as the “waggle dance.” This is a method of communication that the bee uses to tell other bees in the hive the location of a flower or source of food. Here’s how it works: a bee performs the dance on a vertical surface inside the hive. The dance is shaped like a coffee bean: roughly, an oval with a line down the middle. Dancing straight up means to fly in the direction of the sun, straight down means away from the sun, and left and right mean to fly to the left or the right of the sun.
The bee travels in a figure-eight pattern, tracing the line in the middle before performing the loops around the outside of the coffee bean shape. The amount of time it takes the bee to make its circuit around the outside of the coffee bean tells other bees how far away the food source is: a one-second loop means, roughly, that the food source is a kilometer away. The longer the loop, the farther away the food source is.
The bee will repeat this dance many times to indicate the quality of the food source: a really great one will find the bee doing this over and over again, yelling “IT’S A KILOMETER NORTHWEST OF HERE, IT’S A KILOMETER NORTHWEST OF HERE, IT’S A KILOMETER NORTHWEST OF HERE” for minutes on end. A decent but not quite as good source might find the bee repeating the message only a few times."
Some insects can count, recognize human faces, even invent languages.
getpocket.com