ODFW — The Oregon minimum wolf population is determined at the end of each calendar year and is based on wolves that staff has verified through direct evidence. Thus, the actual number of wolves in Oregon is likely greater than this minimum estimate. Wolf packs are dynamic and rarely stay the same size over time.Numbers fluctuate throughout the year as subadults disperse, members die and pups are born. Please check the online updates for information on areas of new wolf activity and other wolf news.* Indicates breeding pair designation. A breeding pair is a male and a female that have produced at least 2 pups surviving to Dec 31.** These numbers are subject to change based on evidence collected over winter.