Lobos e cães / David Cook, Valerie Pitt; ilust. Richard Orr e Shireen Faircloth
Os gorilas / David Cook, Jill Hughes; ilust. Richard Orr
Os grandes felinos / David Cook, Valerie Pitt; ilust. Eric Tenney
A vida nos oceanos / Susannah Cook, David Cook; ilust. Roy Coombstrad. Luís Mendes