One hardworking bee can only produce 1/12 of a teaspoon of honey during the course of its entire life.
Japanese monkeys learned how to buy food from vending machines. They pick up coins in the street and use them.
Birds sing to their eggs about the weather. Zebra finches give a signal to their unhatched chicks if the temperature goes down. Embryos start developing slower because a smaller size is more beneficial if it’s hot.