Dawn McMillan is a writer of children's books and educational readers, who lives north of Thames. Formerly a primary school teacher, she has authored numerous books including Why Do Dogs Sniff Bottoms?, Colour the Stars and the best-selling I Need a New Bum (12,500 copies sold since Sept 2012!). Ross Kinnaird is internationally recognised illustrator who lives in Birkenhead, Auckland. Their 2012 book I Need a New Bum! continues to be a New Zealand bestseller, and their 2014 book Doctor Grundy's Undies reprinted even before it was published.