The partnership between Animal Planet (owned by Discovery Communications Inc.) and the late Steve Irwin can be traced to the network's inception in 1996. Back then, Irwin's series The Crocodile Hunter was one of the initial offerings of the fledgling network. The pairing of the two resulted in Irwin becoming an international star and Animal Planet reaching 160 countries across the globe. That's why it's no surprise that Animal Planet channels around the globe will honor Irwin on Sunday, September 10th with an all-day marathon of Best of the Croc Hunter programming.