John Cancalosi / Gila Woodpecker (Melanerpes uropygialis) bringing food to nest in Saguaro cactus (Carnegiea gigantea) before leaving, Sonoran Desert, Arizona, USA.
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John Cancalosi / Captive corn snake (Pantherophis guttatus) eating an Eastern chipmunk (Eutamias sp.). The chipmunk was found dead and fed to the captive snake. North America.
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John Cancalosi / Canada Goose (Branta canadensis) on nest with goslings, New York, USA.
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John Cancalosi / Greater Roadrunner (Geococcyx californianus), sunbathing. Warming itself by erecting feathers to allow sun to strike directly on black skin. Arizona, USA.
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John Cancalosi / Grey seal (Halichoerus grypus) pup 'waving', UK
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John Cancalosi / Grey seal (Halichoerus grypus), mother and young interacting on beach, UK
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John Cancalosi / Ring-billed gull (Larus delawarensis), adult in flight, New York, USA
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John Cancalosi / White-tailed deer (Odocoileus virginianus) doe standing in snow, New York, USA
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John Cancalosi / Portrait of White-tailed deer (Odocoileus virginianus) doe in snow, New York, USA
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John Cancalosi / Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA.
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John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.
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John Cancalosi / Corn snake (Pantherophis guttatus) young hatching, captive. Maryland, USA.
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John Cancalosi / Sonoran desert toad (Incilius alvarius) pair mating, with trail of spawn in water. Arizona, USA.
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John Cancalosi / American toads (Anaxyrus americanus), several males competing to mate with female, Maryland, USA, April.
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John Cancalosi / Rain storm in the Sonoran desert, with Saguaro cacti (Carnegiea gigantea), near Tucson, Arizona. 2018.
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John Cancalosi / American toads (Anaxyrus americanus), several males competing to mate with female, Maryland, USA, April.
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John Cancalosi / American bullfrog (Lithobates catesbeianus) next to Water lily flower, Washington DC, USA, July.
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John Cancalosi / American bullfrog (Lithobates catesbeianus) swimming near Water lilies (Nymphaea sp) Washington DC, USA. July.
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John Cancalosi / Western diamondback rattlesnake (Crotalus atrox), defensive rattling, Arizona, USA, April.
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John Cancalosi / Pileated woodpecker (Dryocopus pileatus) feeding chicks at nest, Washington DC, USA, June.
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John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
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John Cancalosi / Male American toad (Bufo americanus) calling to attract female, Ithaca, New York, USA, May.
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John Cancalosi / Brazilian agate, slice, with MR. Sad Face design.
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John Cancalosi / Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.
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John Cancalosi / Cross-Section of Utah Septarian Nodule, Utah. A type of geode, Utah Septarian Nodules are found about 15 miles east of Zion National park. They were formed in an ancient sea floor during the Cretaceou...
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John Cancalosi / White-tailed deer (Odocoileus virginianus) in snow, New York, USA, winter
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John Cancalosi / White-tailed Deer (Odocoileus virginianus) sniffing spruce cone. New York, USA, January.
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John Cancalosi / Adult Common morpho butterfly (Morpho peleides) emerging from chrysalis, Costa Rica. Sequence 1/4.
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John Cancalosi / Hooded mantis (Choeradodis rhombifolia) eating katydid prey, Costa Rica.
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John Cancalosi / Hooded mantis (Choeradodis rhombifolia) catching katydid prey, Costa Rica. Sequence 1/2.
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John Cancalosi / Axolotl / Mexican salamander (Ambystoma mexicanum), white or leucistic form, critically endangered in the wild, captive, native to Mexico
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John Cancalosi / Male Western diamondback rattlesnake (Crotalus atrox) courting female, Sonoran Desert, Arizona, USA. Sequence 1/3.
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John Cancalosi / Cattle Egret (Bubulcus ibis) standing with nesting material. Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Boa Constrictor (Boa constrictor) shedding skin from head. Guanacaste National Park, Costa Rican tropical rainforest.
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John Cancalosi / Portrait of a male Snapping Turtle (Chelydra serpentina) New York, USA, May.
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John Cancalosi / Two Red Fox (Vulpes vulpes) cubs playing. New York, USA, May.
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John Cancalosi / Staurolite (iron aluminum silicate hydroxide), always crystallized often with two indivuals intergrown at right angles forming a cross. Sometimes used as amulets or ornaments. A fairly common metamorh...
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John Cancalosi / Apatite (Ca5(PO4)3F, fluorapatite), used in the production of phosphate fertilizers and the production of salts of phosphoric acid and phosporous, a common mineral. Sample from Slyudyanka, Baikal regi...
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John Cancalosi / Quartz (SiO2, silicon dioxide), the most common mineral on earth, used in making glass and other industrial uses.
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John Cancalosi / Pyrite (FeS2, iron sulfide), known as 'Fool's Gold'. Formerly used in the production of sulfuric acid. Sample from Concepcion de Oro, Zacatecas State, Mexico.
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John Cancalosi / Pronghorn Antelope (Antilocapra americana) head portrait, South Dakota, USA
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John Cancalosi / Feral Burro / Donkey foal (Equus asinus) head portrait lying in long grass, Custer State Park, South Dakota, USA
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John Cancalosi / Feral Burro / Donkey (Equus asinus) female and foal, portrait standing in long grass, Custer State Park, South Dakota, USA
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John Cancalosi / Grey Wolf (Canis lupus) head portrait of male, in snow, Captive
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John Cancalosi / Grey Wolf (Canis lupus) head portrait of male, sleeping in snow, Captive
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John Cancalosi / Fossil Keichousaurus (Keichousaurus hui, family Pachypluerosauridae), a lizard-like marine reptile from the Triassic Period. China
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John Cancalosi / Fossil Ray (Heliobatis sp) from the Eocene Epoch, surrounded by bony fish. Green River Formation, Wyoming, USA