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Travel can be difficult in mud

Mud is a mixture of soil (sometimes called dirt) and water. Some animals including worms, frogs, snails, clams, and crayfish live in mud. Pigs and elephants use it to cool themselves in hot weather. Some people enjoy making mud pies out of mud. Mud is a type of soil that is also called "clay soil". Others include the sandy soil, or sand, and garden soil. Wet mud has a soft wet texture. Young children sometimes play in puddles of mud. Mud is usually brown.