David Taylor is an eminent and highly respected veterinary surgeon. He founded the International Zoo Veterinary Group in 1969 and now travels widely across the globe, treating everything from giant pandas to killer whales. He is the author of over 40 pet care books including the bestsellers The Ultimate Dog, You and Your Dog and Hamlyn's My Dog is a Genius, as well as Test Your Dog's IQ, another title in the Hamlyn All Colour Petcare range. He has also appeared on several TV shows.
Hilary Thomas has lectured in Garden Design at the highly-regarded Capel Manor Horticultural College in London, UK. She has been designing gardens for 15 years and teaching students the essential techniques for 12 years since establishing the first planting design course at Capel Manor.