Longevity and Productivity of Three Wolves, Canis lupus, in the Wild.

We document longevity and productivity of three Wolves (Canis lupus) in the wild in Montana and Idaho, USA. Two male Wolves each attained ages of at least 13 years, while a female was 12.2 years old. All three Wolves in our study were older at the time of their last known reproductive events than others reported in the literature. [ABSTRACT FROM AUTHOR]