Hagen Inc. (officially The Rolf C. Hagen Group of Companies) is a pet supplies company founded in 1955 by Rolf C. Hagen with the help of his brothers, Dieter and Horst. Dieter and Horst Hagen joined the company later after immigrating from Germany becoming key members of the firm.Rolf C. Hagen began acquiring bird seed from the Prairies in Western Canada with the intention of exporting it back to Germany, where he had established contacts. This was the initial stage of his new venture, before expanding his business into a diverse pet supplies manufacturer with an aim of international expansion.