NORTHWESTERN WOLF CANIS LUPUS OCCIDENTALIS ALSO KNOWN AS MACKENZIE VALLEY WOLF NORTHERN TIMBER WOLF SUBSPECIES OF GRAY WOLF WESTERN NORTH AMERICA RANGES ALASKA UPPER MACKENZIE RIVER VALLEY SOUTHWARD CENTRAL ALBERTA MEMBER THE FIVE GRAY WOLF SUBSPECIES NORTH SYNONYM SUBSPECIES WRITTEN SCOTTISH NATURALIST SIR JOHN RICHARDSON CHOSE GIVE IT NAME REFERENCE GEOGRAPHIC LOCATION RATHER LABEL AS IT VARIABLE WARRANT PHYLOGENETIC ANALYSES NORTH AMERICAN GRAY WOLVES SHOW CLADE REPRESENTING INVASION NORTH AMERICA DISTINCT EURASIAN NORTHWESTERN THE LAST COLONIZE CROSSED BERING LAND BRIDGE ICE AGE POPULATIONS PROCESS TILL PRESENT WOLVES HUMANS THE CENTURY VICTIMS EATEN POINTS NORTH LANDING SASKATCHEWAN CANADA WOMAN CHIGNIK LAKE LARGEST MALES WEIGHING POUNDS BRITISH COLUMBIA SPECIMEN MILE RIVER BUILD THE EUROPEAN WOLF EARS YELLOWSTONE NATIONAL PARK ARTIFICIALLY FEEDING STAMPEDE THE HERD PACK TEAMWORK YOUNGER CHARGE YOUNG CALVES SICK PLAY YELLOWSTONE DIETS PERCENT SCAVENGED PREDATORS RAVEN BALD EAGLE COYOTE GRIZZLY BEAR NATIONAL BISON INVOLVE ANIMALS KILL