Mammals (178 images)
An image gallery of the class of warm-blooded vertebrate animals called mammals.
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![Bull Elk [Cervus elaphus] in rut confronts bison on foggy snowy morning; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000jPZVZFrAkko/t/150/I0000jPZVZFrAkko.jpg)
Bull Elk & Bison_B3EK...jpg
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![Bull Elk [Cervus elaphus] in rut confronts bison on foggy snowy morning; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000RLGiMwdKDtc/t/150/I0000RLGiMwdKDtc.jpg)
Bull Elk & Bison_B3EK...jpg
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![Bull Elk [Cervus elaphus] in rut confronts bison on foggy snowy morning; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000m7XzRrYAzzM/t/150/I0000m7XzRrYAzzM.jpg)
Bull Elk & Bison_B3EK...jpg
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![Bull Elk [Cervus elaphus] in rut confronts bison on foggy snowy morning; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000_bHiMYinnrw/t/150/I0000_bHiMYinnrw.jpg)
Bull Elk & Bison_B3EK...jpg
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![Mountain Lion [Puma concolor] napping on river rock in headwaters of Frying Pan River, Colorado](http://cdn.c.photoshelter.com/img-get/I0000v8biYQ4meuU/t/150/I0000v8biYQ4meuU.jpg)
Mountain Lion [Puma c...jpg
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![Mountain Lion [Puma concolor] napping on river rock in headwaters of Frying Pan River, Colorado](http://cdn.c.photoshelter.com/img-get/I0000vSgLZqefQEM/t/150/I0000vSgLZqefQEM.jpg)
Mountain Lion [Puma c...jpg
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![Moose [Alces alces] grazing cow with calf; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000tW2pB0M7qCM/t/150/I0000tW2pB0M7qCM.jpg)
Moose [Alces alces]_M...jpg
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![Coyote [Canis latrans] pups peering out from den entrance, exploring ; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000RBEtQfiZHnE/t/150/I0000RBEtQfiZHnE.jpg)
Coyote [Canis latrans...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] lamb inspecting another lamb; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000_1APkTReJIY/t/150/I0000_1APkTReJIY.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] lambs, resting; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000QwYY5kPMtBQ/t/150/I0000QwYY5kPMtBQ.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] lambs; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000PyPB63jH54c/t/150/I0000PyPB63jH54c.jpg)
Rocky Mt. Bighorn She...jpg
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![Grizzly Bear [Ursus arctos] sow forages as cub stays close; Indian Pond, Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000wEEFt4N8svU/t/150/I0000wEEFt4N8svU.jpg)
Grizzly Bear [Ursus a...jpg
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![Grizzly Bear [Ursus arctos] sow with cubs, nursing; Indian Pond, Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000xv9.If3MeQM/t/150/I0000xv9.If3MeQM.jpg)
Grizzly Bear [Ursus a...jpg
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![Grizzly Bear [Ursus arctos] yearling cub foraging; Sylvan Pass, Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000_UEVSNUKzvo/t/150/I0000_UEVSNUKzvo.jpg)
Grizzly Bear [Ursus a...jpg
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![Grizzly Bear [Ursus arctos] yearling cub foraging; Sylvan Pass, Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000BxxIRkjUrBg/t/150/I0000BxxIRkjUrBg.jpg)
Grizzly Bear [Ursus a...jpg
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![Grizzly Bear [Ursus arctos] yearling cub feeding; Sylvan Pass, Yellowstone NP. Wyoming](http://cdn.c.photoshelter.com/img-get/I0000Vm3RRPsLyS4/t/150/I0000Vm3RRPsLyS4.jpg)
Grizzly Bear [Ursus a...jpg
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![Bison [Bison bison] cow & calf resting; Madison R. valley, Yellowstone NP., WY](http://cdn.c.photoshelter.com/img-get/I0000hxv5pMzJ2WM/t/150/I0000hxv5pMzJ2WM.jpg)
Bison [Bison bison] c...jpg
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![Rocky Mt. Elk [Cervus elaphus] calf exploring; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000_PXfaLG_Hn4/t/150/I0000_PXfaLG_Hn4.jpg)
Rocky Mt. Elk [Cervus...jpg
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![Rocky Mt. Elk [Cervus elaphus] calf; Yellowstone NP., WY 06/05](http://cdn.c.photoshelter.com/img-get/I0000reORIjNj5jQ/t/150/I0000reORIjNj5jQ.jpg)
Rocky Mt. Elk [Cervus...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] rams, posturing during rut; Bighorn Sheep Canyon, Arkansas River, Colorado](http://cdn.c.photoshelter.com/img-get/I0000WBOjScmCd04/t/150/I0000WBOjScmCd04.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] ram, closeup; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000w.8OlBAdhQs/t/150/I0000w.8OlBAdhQs.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] rams sparring, during rut; Almont, CO](http://cdn.c.photoshelter.com/img-get/I0000QtYF4DYXJLk/t/150/I0000QtYF4DYXJLk.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] rams, during rut; Bighorn Sheep Canyon, Arkansas River, Colorado](http://cdn.c.photoshelter.com/img-get/I0000Izpi4iWg9Lg/t/150/I0000Izpi4iWg9Lg.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] ram lip-curling "flehmen" response, during rut; Bighorn Sheep Canyon, Arkansas River, CO](http://cdn.c.photoshelter.com/img-get/I0000DYiKGkE.rpA/t/150/I0000DYiKGkE.rpA.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] ram; Bighorn Sheep Canyon, Arkansas River, CO](http://cdn.c.photoshelter.com/img-get/I0000mG_JC4vixFY/t/150/I0000mG_JC4vixFY.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mt. Bighorn Sheep [Ovis canadensis] ram; Bighorn Sheep Canyon, Arkansas River, CO](http://cdn.c.photoshelter.com/img-get/I0000NrZ9uW6YCew/t/150/I0000NrZ9uW6YCew.jpg)
Rocky Mt. Bighorn She...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull asserting dominance, bugling among juniper trees in forest grove, during rut; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000L6fXdSRrOFg/t/150/I0000L6fXdSRrOFg.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] yearling cow browsing on chokecherry; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I00003WmAZDnShmQ/t/150/I00003WmAZDnShmQ.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull during rut, bugling; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000Y8Pg8sBM33k/t/150/I0000Y8Pg8sBM33k.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull during rut, flehmaning; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I00007tbWg00jXv8/t/150/I00007tbWg00jXv8.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull, during rutting season; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000onXa9yt3KYY/t/150/I0000onXa9yt3KYY.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull during rut, bugling; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I00008ZcARM71Y44/t/150/I00008ZcARM71Y44.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull during rut; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000icPGhGal08w/t/150/I0000icPGhGal08w.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull herding harem during rutting season; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000ntFmzsGj4xg/t/150/I0000ntFmzsGj4xg.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull herding harem during rut; Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I00001oxj8ebDkbA/t/150/I00001oxj8ebDkbA.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] cow rubbing on snag; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I00007ab3wpmh3PU/t/150/I00007ab3wpmh3PU.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] herd, cows and calves; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000hyyi.zx_4jg/t/150/I0000hyyi.zx_4jg.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] herd, cows and calves; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I0000id.Xu45kfjM/t/150/I0000id.Xu45kfjM.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] cow nursing calf; Yellowstone National Park, Wyoming](http://cdn.c.photoshelter.com/img-get/I00007XvCYNRaPIc/t/150/I00007XvCYNRaPIc.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull, during mating season (rut); Grand Teton NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I00005iijIoMswuE/t/150/I00005iijIoMswuE.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull, bugling in territorial display during mating season (rut); Grand Teton NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000u8PM8G8mZq8/t/150/I0000u8PM8G8mZq8.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull, tears up sage in territorial display during mating season (rut); Grand Teton NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000JZ73QgxBcog/t/150/I0000JZ73QgxBcog.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull, display during mating season (rut); Grand Teton NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000lK6mRxC1UlU/t/150/I0000lK6mRxC1UlU.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull territorial display during mating season (rut); Grand Teton NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000yGcNA6fZWgk/t/150/I0000yGcNA6fZWgk.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mountain Elk [Cervus elaphus] bull approaching receptive cow during mating season (rut); Yellowstone NP., Wyoming](http://cdn.c.photoshelter.com/img-get/I0000TlYyLUNRpqE/t/150/I0000TlYyLUNRpqE.jpg)
Rocky Mountain Elk [C...jpg
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![Rocky Mt. Bighorn sheep [Ovis canadensis]; Rams competing for ewe during rut, Bighorn Sheep Canyon, Fremont County, CO](http://cdn.c.photoshelter.com/img-get/I0000FHShtQw2aZc/t/150/I0000FHShtQw2aZc.jpg)
Rocky Mountain Bighor...jpg
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![Rocky Mt. Bighorn sheep [Ovis canadensis]; Rams competing for ewe during rut, Bighorn Sheep Canyon, Fremont County, CO](http://cdn.c.photoshelter.com/img-get/I00006o9SaiG4yhI/t/150/I00006o9SaiG4yhI.jpg)
Rocky Mountain Bighor...jpg
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![Rocky Mt. Bighorn sheep [Ovis canadensis]; Rams challenge one another during rut, Bighorn Sheep Canyon, Fremont County, CO](http://cdn.c.photoshelter.com/img-get/I0000evtQokglYYI/t/150/I0000evtQokglYYI.jpg)
Rocky Mountain Bighor...jpg
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![Rocky Mt. Bighorn sheep [Ovis canadensis]; two rams, Bighorn Sheep Canyon, Fremont County, CO](http://cdn.c.photoshelter.com/img-get/I0000EdgyRLsOzQU/t/150/I0000EdgyRLsOzQU.jpg)
Rocky Mountain Bighor...jpg
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![Rocky Mountain Bighorn Sheep [Ovis canadensis] rams sparring during rutting season; Bighorn Sheep Canyon, Arkansas River Valley, Colorado](http://cdn.c.photoshelter.com/img-get/I0000upFoT0wcQKM/t/150/I0000upFoT0wcQKM.jpg)
Rocky Mountain Bighor...jpg