Description: Ants show one of the highest forms of social (or group) interactions, known as eusociality. In the following two videos ants work together to carry a large food item and create a bridge made of ants. The individual goals of ants are less important than the overall goals of the colony. Bees, wasps, termites and even some mammals (like the the naked mole-rat) show a similar behavior.
Web Resource: Eusociality - Wikipedia