A born naturalist, Ian McTaggart-Cowan grew up exploring the woods around his North Vancouver home and went on to embrace his passion and energize others with his enthusiasm and knowledge. He greatly influenced conservation and scientific documentation of nature within the province and beyond. Ian McTaggart-Cowan contributed significantly to the Royal BC Museums natural history collection, and as a gifted and caring Professor of Zoology at UBC he motivated his students to dedicate themselves to expanding our biological database. In 1971 he was awarded the Order of Canada for his efforts, and in 1991 he was acknowledged with the Order of British Columbia. McTaggart-Cowan died in 2010, shortly before his one hundredth birthday -- his legacy an endowment to the world that so enthralled him. With over three-hundred photographs, testimonials from those he mentored and descriptions of those who galvanised him in his pursuits, along with explanations both of his major works and the theses of his students, this book is an invaluable resource for anyone interested in Ian McTaggart- Cowans life and teachings. Originally intended as a centenary birthday gift, this is a tribute to and celebration of a man who has left an enriching legacy for a province, this nation and our world.