Mark Raycroft / Caribou (Rangifer tarandus) male, female, and calf, North America

Mark Raycroft / Caribou (Rangifer tarandus) male running, North America

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) puppy, North America

Mark Raycroft / Siberian Husky (Canis familiaris) puppy running in winter, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck in winter, North America

Mark Raycroft / Golden Retriever (Canis familiaris) running in winter, North America

Mark Raycroft / Elk (Cervus elaphus) bull in autumn, North America

Mark Raycroft / Elk (Cervus elaphus) bull bugling in autumn, North America

Mark Raycroft / Elk (Cervus elaphus) bull bugling in autumn, North America

Mark Raycroft / Chesapeake Bay Retriever (Canis familiaris) running, North America

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull grazing, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull in town in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull displaying to female, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) sub-adult, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) bull, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) females in autumn, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) females in autumn, Newfoundland, Canada

Mark Raycroft / Pronghorn Antelope (Antilocapra americana) running in winter, North America

Mark Raycroft / Grizzly Bear (Ursus arctos horribilis) crossing road, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck in snowfall, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck running, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck, North America

Mark Raycroft / German Shepherd (Canis familiaris) puppies, North America

Mark Raycroft / Golden Retriever (Canis familiaris) puppy, North America

Mark Raycroft / Cocker Spaniel (Canis familiaris) puppy playing, North America

Mark Raycroft / Elk (Cervus elaphus) bull in river in mist, North America

Mark Raycroft / Elk (Cervus elaphus) bulls fighting, North America

Mark Raycroft / Border Collie (Canis familiaris), North America

Mark Raycroft / Black Labrador Retriever (Canis familiaris) puppy sniffing flower

Mark Raycroft / English Bulldog (Canis familiaris) female running

Mark Raycroft / Beagle (Canis familiaris) puppy smelling tulip

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck in velvet, North America

Mark Raycroft / Black Bear (Ursus americanus) cub in tree, North America

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris)

Mark Raycroft / Black Labrador Retriever (Canis familiaris)

Mark Raycroft / Golden Retriever (Canis familiaris)

Mark Raycroft / Golden Retriever (Canis familiaris) puppies

Mark Raycroft / French Bulldog (Canis familiaris) adult and puppy

Mark Raycroft / Basset Hound (Canis familiaris) puppy

Mark Raycroft / Weimaraner (Canis familiaris) puppy, North America

Mark Raycroft / Caribou (Rangifer tarandus) female grazing, North America

Mark Raycroft / Caribou (Rangifer tarandus) female, North America

Mark Raycroft / Caribou (Rangifer tarandus) male with conifer branch used during dominance display, North America

Mark Raycroft / Caribou (Rangifer tarandus) mother and calf bonding, North America

Mark Raycroft / Caribou (Rangifer tarandus) male running, North America