Sheep are animals that live on farms. They grow thick woolly coats to keep them warm in winter. Farmers keep sheep for their wool, milk and meat. Sheep farming is important all over the world. Purple level titles introduce a variety of topics to promote reading for pleasure and offer plenty of opportunities to look at rhyme and rhythm within words to build fluency and phrasing. PM Non-fiction books are carefully researched, presenting factual information accompanied by superb photography and realistic illustrations to engage young readers.