Jim Brandenburg / Timber Wolf (Canis lupus) asserting dominance over pack member at kill, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pair on frozen snow-covered lake, northern Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) walking across icy snow, northern Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pack feeding on White-tailed Deer (Odocoileus virginianus) carcass, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pack feeding on deer carcass, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) licking its lips, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) juvenile, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) and rabbit tracks in the snow, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) juvenile, Minnesota

Tim Fitzharris / Timber Wolf (Canis lupus) mother rolling in green grass with pup, Montana

Tim Fitzharris / Timber Wolf (Canis lupus) running through shallow river, Montana