Peter Barrett's career as an illustrator took off after writing and illustrating a three book series for very young children, along with his wife Susan Barrett. Published by Ward Lock, the books (The circle Sara drew, The square Ben drew, The line Sophie drew) became very popular. Barrett subsequently concentrated on animal art and illustrations, illustrating numerous children's non-fiction books, specializing in dogs, horses and dinosaurs. His illustrations for Birdwatcher's Diary, by Roger Lovegrove, in 1982 drew critical acclaim.
