Robert “Bob” Allen Kotzian, Age 91. Passed away on December 23, 2024. Bob was born in Detroit, Michigan on August 14, 1933. He is survived by his wife of 68 years, Suzanne, as well as his children Brian Kotzian, David (and Debbie) Kotzian, and Nancy (and Vasyl) Kotzian. He also leaves three grandchildren, Rachel (and James) Ktsanes, James Kotzian, and Shayna Kotzian as well as three great-grandchildren, Sophia, Charlie and Alexander Ktsanes. Bob had a lifelong love of nature and the outdoors and an encyclopedic knowledge of Michigan wildlife, plants, and Ice Age paleontology. He passed this love of nature on to his children and their families, who will miss his knowledge and enthusiasm. Funeral arrangements entrusted to Kaul Funeral Home of Roseville.