John Cancalosi / Barn swallow (Hirundo rustica) feeding chicks on nest. Maryland, USA. June.

John Cancalosi / Barn swallow (Hirundo rustica) feeding chicks on nest. Maryland, USA. June.

John Cancalosi / Barn swallow (Hirundo rustica) feeding Moth to chicks on nest. Maryland, USA. June.

John Cancalosi / Wood turtle (Glyptemys insculpta) portrait. Maryland, USA. June.

John Cancalosi / Wood turtle (Glyptemys insculpta) portrait. Maryland, USA. June.

John Cancalosi / Northern water snake (Nerodia sipedon), Maryland, USA. April.

John Cancalosi / American toad (Anaxyrus americanus), pair in amplexus, Maryland, USA. April.

John Cancalosi / Malachite, and chysocolla, Democratic Republic of Congo, Malachite-copper carbonate hydroxide ,Cu2CO3 (OH)2, one of the first minerals mined to extract copper thousands of years ago, still a minor cop...

John Cancalosi / Snapping turtle (Chelydra serpentina) and Painted turtles (Chrysemys picta) basking, Maryland, USA. May.

John Cancalosi / Snapping turtle (Chelydra serpentina) Maryland, USA. May.

John Cancalosi / Snapping turtle (Chelydra serpentina) and painted turtles (Chrysemys picta) basking, Maryland, USA. May.

John Cancalosi / Corn snake (Pantherophis guttatus), female with recently laid eggs, captive, native to Eastern United States

John Cancalosi / Corn snake (Pantherophis guttatus), female with recently laid eggs, captive, native to Eastern United States

John Cancalosi / American toad (Anaxyrus americanus), male with vocal sac inflated calling to attract female, Maryland, USA. April.

John Cancalosi / Snapping turtle (Chelydra serpentina) Maryland, USA. May.

John Cancalosi / Snapping turtle (Chelydra serpentina) and Painted turtles (Chrysemys picta) basking, Maryland, USA. May.

John Cancalosi / Snapping turtle (Chelydra serpentina) and painted turtle (Chrysemys picta) basking, Maryland, USA. May.

John Cancalosi / Eastern gray squirrel (Sciurus carolinensis), feeding from bird feeder, Maryland, USA. March.

John Cancalosi / Painted turtles (Chrysemys picta) basking, Maryland, USA. May.

John Cancalosi / American toad (Anaxyrus americanus), eggs / spawn recently laid, Maryland, USA. April.

John Cancalosi / American toad (Anaxyrus americanus), eggs / spawnrecently laid, Maryland, USA. April.

John Cancalosi / American toad (Anaxyrus americanus), pair in amplexus, female laying eggs amongst spawn from other pairs, Maryland, USA, April.

John Cancalosi / Northern water snake (Nerodia sipedon), eating American toad (Anaxyrus americanus), Maryland, USA. April.

John Cancalosi / American toad (Anaxyrus americanus), 'toad knot', males attempting to mate with female, Maryland, USA. April.

John Cancalosi / Young, Timber rattlesnake (Crotalus horridus) and adult, Pennsylvania, USA.

John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.

John Cancalosi / Young, Timber rattlesnake (Crotalus horridus) moving over coiled adult, Pennsylvania, USA.

John Cancalosi / Timber rattlesnake (Crotalus horridus) unravelling, moving out of frame, leaving young behind at nest site, Pennsylvania, USA.

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.

John Cancalosi / Two Common snapping turtles (Chelydra serpentina), one with a Painted turtle (Chrysemys picta) feeding on algae on its shell, Maryland, USA, May.

John Cancalosi / Common snapping turtle (Chelydra serpentina) with a Painted turtle (Chrysemys picta) feeding on algae on its shell, Maryland, USA, May.

John Cancalosi / Green frog tadpole (Rana clamitans) intermediate stage tadpole with back legs, New York, USA

John Cancalosi / Green Frog (Rana clamitans) nearly metamorphosed frog showing remnants of tadpole tail, New York, USA

John Cancalosi / Green Frog (Rana clamitans) nearly metamorphosed frog showing remnants of tadpole tail, New York, USA

John Cancalosi / Red spotted newt eft / juvenile terrestrial stage (Notophthalmus viridescens viridescens) New York, USA

John Cancalosi / American toad (Bufo americanus) pair in amplexus , New York, USA

John Cancalosi / American toad (Bufo americanus) two pairs in amplexus, New York, USA

John Cancalosi / American toad (Bufo americanus) male calling to attract female, New York, USA

John Cancalosi / Canada goose (Branta canadensis) on nest with goslings, New York, USA

John Cancalosi / Canada goose (Branta canadensis) on nest with goslings, New York, USA

John Cancalosi / Canada goose (Branta canadensis) pair on nest with goslings, New York, USA

John Cancalosi / Canada goose (Branta canadensis) on nest with goslings, New York, USA

John Cancalosi / Canada Goose (Branta canadensis) on nest with goslings, New York, USA.

John Cancalosi / Grey treefrogs (Hyla versicolor), pair in amplexus, New York, USA

John Cancalosi / American aligator (Alligator mississippiensis), close up of skin, Louisiana, USA. November.

John Cancalosi / Phainopepla (Phainopepla nitens), male, Sonoran desert, Arizona, USA. February.

John Cancalosi / Phainopepla (Phainopepla nitens), male, Sonoran desert, Arizona, USA. February.

John Cancalosi / Honey pot ant (Myrmecocystus spp) with engorged gasters, living food storage, in the colony. Arizona, USA. August.

Edwin Giesbers / Red river hog (Potamochoerus porcus) close up of head, captive

Jabruson / Bush pigs {Potamochoerus porcus} leaving 'mangoire' in bai for forest , Odzala NP, Rep of Congo, Central Africa

Cyril Ruoso / Eastern Chimpanzee (Pan troglodytes schweinfurthii) , Frodo the dominant male and hunter, eating a Red River Hog (Potamochoerus porcus) piglet with two females begging, Gombe National Park, Tanzania

ZSSD / Red River Hog (Potamochoerus porcus) pair standing face to face, a highly social bush pig, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) four babies, a highly social bush pig, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) baby and mother interacting, a highly social bush pig native to West Africa

Ernie Janes / Red river hog (Potamochoerus porcus) portrait, captive, occurs in Congo and Guinea.

Jabruson / Man on bicycle with smoked Red river hog meat (Potamochoerus porcus) talking to ecoguard monitoring bushmeat traffic on Ouesso - Makoua highway near Odzala-Kokoua National Park, Republic of Congo, May...

Jabruson / Man on bicycle with smoked Red river hog meat (Potamochoerus porcus) talking to ecoguard monitoring bushmeat traffic on Ouesso - Makoua highway near Odzala-Kokoua National Park, Republic of Congo, May...

Edwin Giesbers / Red river hog (Potamochoerus porcus) profile portrait, captive

Edwin Giesbers / Red river hog (Potamochoerus porcus) close up of ear, captive

Edwin Giesbers / Red river hogs (Potamochoerus porcus) foraging in mud, captive

Edwin Giesbers / Red river hog (Potamochoerus porcus) captive

Nick Garbutt / Red River Hogs (Potamochoerus porcus) wallowing at Langoue Bai, Ivindo National Park, Gabon, Central Africa.

Rod Williams / Red river hog {Potamochoerus porcus} juvenile female, captive from West and Central Africa

Rod Williams / Wild bushpig / Red river hog, female {Potamochoerus porcus} captive, occurs West Africa

Jabruson / Bush pigs {Potamochoerus porcus} searching mangoire for nuts, Maya Nord Bai, Odzala NP, Congo

Cyril Ruoso / Eastern Chimpanzee (Pan troglodytes schweinfurthii) , Frodo the dominant male and hunter, eating a Red River Hog (Potamochoerus porcus) piglet with two females begging, Gombe National Park, Tanzania

Cyril Ruoso / Eastern Chimpanzee (Pan troglodytes schweinfurthii) , Frodo the dominant male and hunter, with a Red River Hog (Potamochoerus porcus) piglet carcass, Gombe National Park, Tanzania

Sebastian Kennerknecht / Red River Hog (Potamochoerus porcus) male, Lope National Park, Gabon

ZSSD / Red River Hog (Potamochoerus porcus) pair, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) piglet climbing on resting adult, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) piglet running, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) three piglets, native to Africa

Konrad Wothe / Bush Pig (Potamochoerus porcus) running, Africa

ZSSD / Red River Hog (Potamochoerus porcus) piglet trio, a highly social bush pig native to Africa, San Diego Zoo, California

ZSSD / Red River Hog (Potamochoerus porcus) three piglets, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) piglets running, native to Africa

ZSSD / Red River Hog (Potamochoerus porcus) pair of piglets, highly social bush pig native to Africa and Madagascar

Jabruson / Bush pigs search mangoire for nuts {Potamochoerus porcus} Maya M Nord Bai Odzala NP Congo

Jabruson / Bush pigs search mangoire for nuts {Potamochoerus porcus} Maya M Nord Bai Odzala NP Congo

Jabruson / Bush pigs leave mangoire for forest {Potamochoerus porcus} Maya M Nord Bai Odzala NP Congo

Jabruson / Bush pigs leave mangoire for forest {Potamochoerus porcus} Maya M Nord Bai Odzala NP Congo

Laurent Geslin / Skull and teeth of Red river hog {Potamochaerus porcus}

Piotr Naskrecki / Red River Hog (Potamochoerus porcus) feeding on aquatic vegetation, Gorongosa National Park, Mozambique

Anup Shah / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty year old alpha male, named Ferdinand, feeding on Red River Hog (Potamochoerus porcus) piglet, Gombe National Park, Tanzania