Yva Momatiuk & John Eastcott / Cheetah (Acinonyx jubatus) portrait of adult female, resting but alert, Masai Mara National Reserve, Kenya

Yva Momatiuk & John Eastcott / Cheetah (Acinonyx jubatus) adult female, with her cubs resting on termite mound, evening, Masai Mara National Reserve, Kenya

Yva Momatiuk & John Eastcott / Barn Owl (Tyto alba) portrait against blue sky in desert, spring, Arizona-Sonora Desert Museum, Arizona

Yva Momatiuk & John Eastcott / American Bison (Bison bison) herd near river, Yellowstone National Park, Wyoming

Yva Momatiuk & John Eastcott / Grizzly Bear (Ursus arctos horribilis) spring cub male and mother resting, Katmai National Park, Alaska

Yva Momatiuk & John Eastcott / Cheetah (Acinonyx jubatus) adult female with cub after making a kill and letting cubs eat, she rests with one cub snuggled near, Masai Mara National Reserve, Kenya

Yva Momatiuk & John Eastcott / Spanish Mustang (Equus caballus) young bachelor studs interact and graze together, northern Wyoming

Yva Momatiuk & John Eastcott / Whistling Kite (Haliastur sphenurus) group and Black Kite (Milvus migrans) in tree, Queensland, Australia

Yva Momatiuk & John Eastcott / Major Mitchell's Cockatoo (Lophochroa leadbeateri) eating fruit, Watarrka National Park, Northern Territory, Australia