Montana’s mountain lion winter hunting season begins Dec. 1 and hunters can expect a change when they report their harvest. To streamline the process of aging the lion, FWP personnel may pull a tooth after visually examining the lion when the hunter registers it. "The lion’s age is an important piece of data in managing this species," says Rich DeSimone, Fish, Wildlife & Parks mountain lion research biologist in Helena. "A visual inspection of the teeth is the first step, but a tooth may be pulled to get a more precise age." In the past, FWP personnel kept the lion skull, which was then sent to the department’s Bozeman lab for aging. Eventually, the skull was sent back to the hunter. Starting this year, the skull will be tagged and examined, then returned. The 2000 mountain lion hunting regulations include: