Astonishing Tales #1 (1970)

Kraven the Hunter, bored and restless, discovers a magazine feature on Ka-Zar and his hidden Savage Land jungle and immediately declares him the perfect prey. He spends months studying every known fact about Ka-Zar's domain before travelling there armed and ready. In the Savage Land, he springs his trap: deliberately stampeding a herd of mammoths toward concealed pits to draw Ka-Zar and Zabu out into the open. The ruse works — Ka-Zar and Zabu divert the herd to safety, only to be ambushed by Kraven himself, who stun-blasts Ka-Zar into the pit and subdues Zabu with a bola-net and tranquilizer spray, then airlifts the caged sabretooth away by helicopter toward America. Ka-Zar claws his way out of the pit, dives into the ocean, and swims to intercept Kraven's ship, fighting through the entire crew to reach Zabu's cage. He rips the bars apart and gets his hands on Kraven in a brutal deck brawl, even delivering a damning verdict — that Kraven alone hunts not for food or survival, but purely for sport, and that only man can be so evil. But Kraven hits him with the tranquilizer spray a second time, and with NATO planes closing in he orders Ka-Zar thrown overboard rather than be caught. Ka-Zar is rescued from the ocean by the passing planes and, after months of waiting, leaves his jungle behind for New York, vowing to hunt the hunter down