All about the Oldest Cow in the World! What do you give a cow who has been everywhere, and done everything? Will Bluebell's friends find her the perfect birthday present? The Animal Crackers series is back by popular demand, with an attractive and fresh new cover design. Inside, the pages have clear, easy-to-read type and fun colour illustrations throughout each book. They also include joke sections and are published in a large, child-friendly format.