Kathy Hoopmann Kathy Hoopmann is the best-selling Australian author of All Cats Have Asperger Syndrome, All Dogs Have ADHD and All Birds Have Anxiety. With a primary school teaching background, she is the author of over twenty books for children and teenagers which sell widely in Australia, the UK, the US and the Middle East, and her books have been translated into nineteen languages. To find out more about Kathy and her writing, visit www.kathyhoopmann.com.