Mitsuaki Iwago / Red Kangaroo (Macropus rufus) jumping, Australia

Pete Oxford / African Elephant (Loxodonta africana) running, vulnerable, Africa

Jim Brandenburg / Gemsbok (Oryx gazella) running across desert, Namib Desert, Namibia

Jim Brandenburg / Gemsbok (Oryx gazella) running across desert landscape, Namibia

Konrad Wothe / Timber Wolf (Canis lupus) running through dry grass, Colorado

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) horses running, Red Desert, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) herd running in dry, Dusty Desert, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) family band running down rocky slope in desert, Fifteen Mile Herd Management Area, central Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) family band running together in desert, Fifteen Mile Herd Management Area, central Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) family band running together in desert, Fifteen Mile Herd Management Area, central Wyoming

Yva Momatiuk & John Eastcott / Angolan Giraffe (Giraffa giraffa angolensis) pair scaring Springbok (Antidorcas marsupialis) from waterhole in dry season, Etosha National Park, Namibia

Yva Momatiuk & John Eastcott / Angolan Giraffe (Giraffa giraffa angolensis) trio running with Ostrich (Struthio camelus) male and Springbok (Antidorcas marsupialis) males at waterhole in dry season, Etosha National Park, Namibia