David Alderton is an international authority on pets and their care. His books have sold over four million copies worldwide, and they are now available in 25 languages. David contributes to a wide-range of specialist publications, writes a syndicated weekly newspaper column on petcare and is a consultant to the Pet Industry Joint Advisory Council, based in Washington D.C. David also gives talks on petcare subjects at national and international seminars; he participates in radio programmes, and has appeared on television on many occasions.