This paper is a preliminary report on the results of a predator/prey research and management study in Interior Alaska. Alaska was able to increase moose populations through the use of their wolf-reduction program started in 1976. Calf and yearling survival increased 2- to 4- fold after 1976, while adult mortality declined sharply. By 1981 moose numbers had increased from 3,000 to over 4,000. However it is important to point out that he study also indicated that the initial decline in prey (moose) populations was the result of a harsh winter in 1965-66, leading to deep snow and unavailability to browse, not predation. This already low population was then further aggravated by excessive kills by man and wolves. Periodic deep snow, harvest by man, and predation by wolves continued to limit moose populations. The study concluded that when predation becomes a primary factor controlling the growth of an ungulate population - usually after that population has entered a significant decline due to other causes - then a manager really has only two effective options: (1) wait for the slow, more or less natural change of events, or (2) hasten the increase in prey by altering the control which predators exert on prey populations. The author also emphasizes that wolf-reduction will only be carried out when believed to be necessary to facilitate the quick recovery of depressed ungulate populations.