Daniel J. Cox / Gray Wolf (Canis lupus) predating female Elk (Cervus elaphus) crossing river, Alum Creek, Yellowstone National Park, Wyoming, sequence 4 of 4
00585346
Daniel J. Cox / Gray Wolf (Canis lupus) killing female Elk (Cervus elaphus) crossing river, Alum Creek, Yellowstone National Park, Wyoming, sequence 3 of 4
00585345
Daniel J. Cox / Gray Wolf (Canis lupus) attacking female Elk (Cervus elaphus) crossing river, Alum Creek, Yellowstone National Park, Wyoming, sequence 2 of 4
00585344
Daniel J. Cox / Gray Wolf (Canis lupus) pair predating female Elk (Cervus elaphus) crossing river, Alum Creek, Yellowstone National Park, Wyoming, sequence 1 of 4
00584862
Michael Quinton / Northern Hawk Owl (Surnia ulula) pair at nest, Alaska
00584861
Michael Quinton / Northern Hawk Owl (Surnia ulula) peering from nest, Alaska
00584834
Michael Quinton / Northern Hawk Owl (Surnia ulula) parent with chicks at nest, Alaska
00584810
Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska
00584809
Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska
00584808
Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska
00584540
Jaymi Heimbuch / Coyote (Canis latrans) female in city, San Francisco, Bay Area, California
00584397
Alan Murphy/ BIA / Northern Cardinal (Cardinalis cardinalis) male and Pyrrhuloxia (Cardinalis sinuatus) male fighting, Texas
