About Us Founded by Rolf C. Hagen in 1955, Hagen has grown to become the world's largest privately-owned, multinational pet p ... roducts manufacturer and distributor. Mission Pets are not only the heart of our business, they are the reason we are in business. Company Overview Thanks to the enthusiasm of pet owners and the loyalty of retailers, Rolf C. Hagen Inc. has become the largest privately owned pet specialty company in the world. Our success is based on four elements that serve our purpose of improving the quality of pet care around the world. These elements are innovation, design, quality and pets. We want to keep evolving in these four fields to ensure the best products for your pets. read more