Ants live in groups that can be big or small. Some kinds of ants live in small groups and eat other animals. Some ants work together in very big groups. These groups can have millions of ants in them that travel outside every day in a big area. Ants are small, but they are very strong. Some ants are strong enough to carry things that are as heavy as 20 ants. Some ants are called workers. Workers dig tunnels and carry food back to the colony so that other ants and the queen ant can eat.