American bison (Bison bison) female covered in hoar frost near hot spring, portrait. Midway Geyser Basin, Yellowstone National Park, USA. February
The Senate Group of Giant sequoia (Sequoiadendron giganteum) trees on the Congress Trail in Sequoia National Park, California, USA
Atlantic puffin (Fratercula arctica) landing, wings outstretched. Machias Seal Island, off the coast of Maine, USA. July
Herd of American bison (Bison bison) in snow, Yellowstone National Park, Wyoming, Yellowstone, January
Grizzly bear (Ursus arctos horribilis) female with cub riding on back, Katmai National Park, Alaska, USA, August
RF - Grey Andalusian mare running in snow, Berthoud, Colorado, USA. January
Polar bear (Ursus maritimus) young bear rolling around in the snow, on newly formed pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska
Florida manatee (Trichechus manatus latirostris) mother and calf endangered. Three Sisters Spring in Crystal River, Florida, USA
Sea otter (Enhydra Lutris) with forelegs raised, Sitka Sound, Alaska, USA, August
Grey Wolf (Canis lupus), in forest, captive, USA
German shorthair pointer puppy, Pomfret, Connecticut, USA
RF - Bison (Bison bison) breathing in the cold air, Yellowstone National Park, USA, February
Rainbow river, Rainbow Springs State Park, Florida, USA. January. Photographed for The Freshwater Project
Eastern chipmunk (Tamias striatus) gathering chestnuts, Chestnut Hill, Philadelphia, Pennsylvania, USA, September
Eastern tiger salamander (Ambystoma tigrinum) North Florida, USA. December
American Pika (Ochotona princeps) leaping from one alpine rock to another as it heads to its home carrying food for the winter months. Rocky Mountain National Park, Colorado, USA. August
Piping Plover (Charadrius melodus) brooding three chicks with a fourth approaching, northern Massachusetts, USA.June. Endangered species
English springer spaniel, three standing with front legs on rock, Rhododendron flowers in background. Haddam, Connecticut, USA. June
DELETE DUPLICATE - RF - Wild buckskin Mustang stallion walking towards waterhole on dusty dry summer day, Sand Wash Basin, Colorado, USA. August
Head close up of Black labrador retriever dog (field type) swimming in pond with autumn reflections, Rhode Island, USA
Caribou / Reindeer bull (Rangifer tarandus) close-up grazing, Denali National Park, Alaska, USA, September
Moose (Alces alces) bull swimming in water, Baxter State Park, Maine, USA
American bison (Bison bison) Yellowstone National Park, Montana, USA
Grizzly bear (Ursus arctos) catching a fish, Brooks Falls in Katmai National Park, Alaska, USA, July
American bison (Bison bison) male walking through deep snow. Hayden Valley. Yellowstone National Park, Wyoming, USA. January
Bobcat (Lynx rufus) standing on branch in snow. Madison River Valley, Yellowstone National Park, Wyoming, USA. January
White ibis (Eudocimus albus) group of four in flight above clouds, Fort Myers Beach, Gulf Coast, Florida, USA, March
Bison (Bison bison) herd walking in snow, Yellowstone National Park, Wyoming, USA, February
Calleta silkmoth (Eupackardia calleta), Texas USA Controlled conditions
Aerial view of tidal channels in marshland, with tree like appearance. Mockhorn Island State Wildlife Management Area, Virginia, USA. May 2019
Portrait of a Black-capped chickadee, (Poecile atricapillus) with white background, Block island, Rhode Island, USA. Bird caught during scientific research
Coyote (Canis latrans) walking through deep winter snow. Yellowstone National Park, Wyoming, USA. January
Ladder-backed Woodpecker (Picoides scalaris), adult male perched on icy branch of Possum Haw Holly (Ilex decidua) with berries, Hill Country, Texas, USA. February
RF- Quarter horses running in snow at ranch, Shell, Wyoming, USA, February
Brandts cormorant (Phalacrocorax penicillatus) bursts through a school of Pacific chub mackerel (Scomber japonicus) while hunting beneath an oil rig
Airedale terrier, female, running through coastal grass in autumn, Madison, Connecticut, USA. October
Common loon (Gavia immer), in breeding plumage, running across water to take flight, Michigan, USA. June
Common loon (Gavia immer) nesting at edge of lake and calling, Acadia National Park, Maine, USA, August
Coastal brown bear (Ursus arctos) and cub, Lake Clarke National Park, Alaska, September
Golden Retriever puppy in wooden basket with purple flowers; USA
Spotted lanternfly (Lycoma delicatula) fourth instar nymph, Wissahickon Valley Park, Pennsylvania, USA, July
Grey wolf running in snow (Canis lupus), Minnesota, USA. January. Controlled situation
Cow killer velvet ant (Dasymutilla occidentalis) on white background, Tuscaloosa County, Alabama, USA September
Polar bears (Ursus maritimus) standing up on hind legs, barrier island outside Kaktovik, Alaska, USA. September
Golden Retriever puppy in wooden basket with sunflowers; USA
Golden Retriever pups in snow, Holland, Massachusetts, USA
Air filled bladders of Giant kelp (Macrocystis pyrifera). Santa Barbara Island, Channel Islands. Los Angeles, California, United States of America. North East Pacific Ocean
Giant kelp (Macrocystis pyrifera) reaching up toward the sea surface, off Santa Barbara Island, California, USA, Pacific Ocean
