Ingo Arndt / Carpet python snake (Morelia spilota variegata) hatching from egg, Australia. Captive.

Ingo Arndt / Carpet python snake (Morelia spilota variegata), hatching from egg, Australia. Captive.

Michael D. Kern / Python (Morelia amethistina) captive from Australasia

Anup Shah / African rock python (Python sebae) Masai Mara National Reserve, Kenya

Steve Nicholls / Skeleton of a Python (Python sp)

Juergen Freund / Researcher Guido Westhoff looking at a cross section of pit organ tissue from a Coastal carpet python (Morelia spilota mcdowelli) through an electron microscope with 20,000 x magnification. Pit organs...

Juergen Freund / Black-headed python (Aspidites melanocephalus) perched on a tree branch overlooking the Australian outback. Queensland, Australia, February

Juergen Freund / Olive python (Liasis olivaceus) perched on top of a termite mound. Many pythons shelter in hollow termite mounds when not hunting. Queensland, Australia, February

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli) moving over vegetation, Queensland, Australia

Mark Bowler,Mark Bowler / Ball / Royal python (Python regius) coiled, moving away

David Welling / Green tree python (Chondopython viridis) coiled on tree, captive

Michael D. Kern / Green tree python snake {Morelia / Chondopython viridis} portrait, captive, occurs Papua New Guinea and Indonesia

Michael D. Kern / White lipped python snake {Leiopython albertisii} captive, New Guinea

Jabruson / Rock python {Python sebae} eating Ground squirrel {Xerus rutilus} Kenya

John Cancalosi / Rock python (Python sebae). Africa

Jabruson / African rock python {Python sebae} feeding on Red billed quelea {Quelea quelea} Tsavo East NP, Kenya

Peter Blackwell / Rock python {Python sebae} constricting a Thomson's gazelle {Gazella thomsoni} Masai Mara, Kenya. Gazelle eventually escaped.

Karine Aigner / Stomach contents of Burmese pythons (Python bivittatus) are separated and laid out on sheets in order to identify them. Some of the contents seen here from varying snakes are Roseate spoonbill, Pied b...

Karine Aigner / Burmese pythons (Python bivittatus) stomach samples kept fresh in plastic bag with desiccant. Florida, USA, August.

Karine Aigner / Stomach contents of invasive Burmese pythons (Python bivittatus) are separated and laid out on sheets in order to identify them. Some of the contents seen here are the feet and feathers of a white ibi...

Karine Aigner / Stomach contents of invasive Burmese pythons (Python bivittatus) are separated and laid out on sheets in order to identify them. Some of the contents seen here are the feet and feathers of a white ibi...

Karine Aigner / Christina Romagosa (right), Research Assistant Professor, University of Florida and her team of Python researchers looking through over the stomach contents of different snakes including invasive Burm...

Karine Aigner / Christina Romagosa (right), Research Assistant Professor, University of Florida and her team of Python researchers looking through over the stomach contents of different snakes including invasive Burm...

Karine Aigner / Biologists sift through Burmese pythons (Python bivittatus) faeces to see what invasive pythons are eating. Florida, USA, July 2018.

Ingo Arndt / Carpet python snake (Morelia spilota variegata), Australia. Captive

Ingo Arndt / Juvenile Green Tree Python (Chondopython viridis), Papua New Guinea.

Ingo Arndt / Carpet python (Morelia spilota) showing protruding hemipenis, Australia.

Ingo Arndt / Green Tree Python (Chondopython viridis), Papua New Guinea.

Ingo Arndt / Carpet python snake (Morelia spilota variegata) hatching from egg, Australia. Captive

Ingo Arndt / Reticulated python {Python reticulata} climbing tree, Khao NP, Thailand

Daniel Heuclin / Reticulated python (Python reticulatus) on tree, Sumatra.

Daniel Heuclin / Northern white-lipped python (Leiopython albertisii) in tree, Irian Jaya, Papua New Guinea

Mark Carwardine / Green tree python (Chondopython / Morelia viridis) captive, from rainforests of New Guinea and extreme northern Queensland

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python portrait {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Juvenile Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Mark Carwardine / Green tree python {Chondopython viridis} captive

Daniel Heuclin / Eastern small-blotched / Spotted Python (Antaresia maculosa) studio shot on white background. Endemic to eastern Papua-New-Guinea and eastern Australia.

Ernie Janes / Ball python (Python regius) captive

Rod Williams / Boelen's Python (Morelia boeleni). Captive. Endemic to Papua New Guinea. Endangered. UK, September.

Anup Shah / African rock python (Python sebae) Masai Mara National Reserve, Kenya

Anup Shah / African rock python (Python sebae) moving through grass, Masai Mara National Reserve, Kenya

Daniel Heuclin / Timor python (Python timoriensis) amongst vegetation, Flores, Timor, SE Asia

Juergen Freund / Green tree python (Morelia viridis) coiled around a tree branch. Indonesia, July 2009.

Juergen Freund / Researcher Guido Westhoff showing everted hemipenis of a road kill Black-headed python (Aspidites melanocephalus) in a mobile lab in the bush. Queensland, Australia, February 2008

Juergen Freund / Snake breeder Lauren Collings with a Spotted python (Antaresia maculosa) in a trash dump site. Queensland, Australia, February 2008

Juergen Freund / Researcher Guido Westhoff catching a Spotted python (Antaresia maculosa) in a trash dump site. Dump sites and rubbish tips are favorite hiding places of reptiles. Snakes often take cover under sheets...

Juergen Freund / Researcher Guido Westhoff finding a Spotted python (Antaresia maculosa) in a trash dump site. Dump sites and rubbish tips are favorite hiding places of reptiles. Snakes often take cover under sheets o...

Juergen Freund / Researcher Guido Westhoff photographing an olive python (Liasis olivaceus) on a termite mound. Queensland, Australia, February 2008

Juergen Freund / Researcher Guido Westhoff handling a Black-headed python (Aspidites melanocephalus). Queensland, Australia, February 2008

Juergen Freund / Researcher Guido Westhoff handling a Black-headed python (Aspidites melanocephalus). Queensland, Australia, February 2008

Juergen Freund / Researcher Guido Westhoff looking at a cross section of pit organ tissue from a Coastal carpet python (Morelia spilota mcdowelli) through an electron microscope with 20,000 x magnification. Pit organs...

Juergen Freund / Olive python (Liasis olivaceus) perched on a tree by the edge of a watering hole. Queensland, Australia, February

Juergen Freund / Olive python (Liasis olivaceus) perched on top of a termite mound. Many pythons shelter in hollow termite mounds when not hunting. Queensland, Australia, February

Juergen Freund / Close-up of Olive python (Liasis olivaceus) head and coils. Taken in Queensland, Australia, February

Juergen Freund / Close-up of Olive python (Liasis olivaceus) head on white background. Taken in Queensland, Australia, February

Juergen Freund / Olive python (Liasis olivaceus) on white background, seen from above. Taken in Queensland, Australia, February

Juergen Freund / Black-headed python (Aspidites melanocephalus) coiled in a figure-of-eight on white background with head raised. Taken in Queensland, Australia, February

Juergen Freund / Black-headed python (Aspidites melanocephalus) on white background stretching head high into the air. Taken in Queensland, Australia, February

Juergen Freund / Close-up of Black-headed python (Aspidites melanocephalus) head on white background. Taken in Queensland, Australia, February

Juergen Freund / Black-headed python (Aspidites melanocephalus) coiled on white background with head raised. Taken in Queensland, Australia, February

Juergen Freund / Black-headed python (Aspidites melanocephalus) seen from above, coiled on white background. Taken in Queensland, Australia, February

Juergen Freund / Black-headed python (Aspidites melanocephalus) beginning to uncoil on white background. Taken in Queensland, Australia, February

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli) coiled, on white background. Queensland, Australia

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli) moving over vegetation, Queensland, Australia

Juergen Freund / Close-up of head of Coastal carpet python (Morelia Spilota McDowelli) on white background, Queensland, Australia

Juergen Freund / Spotted python (Antaresia maculosa) resting on a wrecked car radiator. Queensland, Australia, February

Juergen Freund / Massive 2.5 metre Black-headed python (Aspidites melanocephalus) perched on a tree trunk in the forest. Queensland, Australia, February

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli) on white background, Queensland, Australia

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli) coiled, on white background. Queensland, Australia

Juergen Freund / Detail of scale pattern on skin of a young Coastal Carpet Python (Morelia spilota mcdowelli). Queensland, Australia

Juergen Freund / Young Coastal Carpet Python (Morelia spilota mcdowelli)on leaf, Queensland, Australia

John Cancalosi / Rough scaled python (Morelia carinata) in defensive posture, captive, Australia

John Cancalosi / Rough scaled python (Morelia carinata) in defensive posture, head portrait, captive, from Australia

John Cancalosi / Rough scaled python (Morelia carinata) in defensive posture, captive from Australia

John Cancalosi / Rough scaled python (Morelia carinata) in defensive posture, captive, from Australia

Jane Burton / Burmese Python (Python molurus bivittatus) newly hatched from an egg, SE Asia.

Jane Burton / Burmese Python (Python molurus bivittatus) newly hatched from an egg, with mouth open, SE Asia.

Mark Carwardine / Reticulated python (Python reticulatus) captive, from SE Asia

Mark Carwardine / Reticulated python (Python reticulatus) coiled, captive, from SE Asia

Mark Carwardine / Reticulated python (Python reticulatus) captive, from SE Asia

Mark Carwardine / Reticulated python (Python reticulatus) captive, from SE Asia

Mark Carwardine / Carpet python (Morelia spilota) captive, from SE Asia and Australia

Michael D. Kern / Ringed python (Bothrochilus boa) captive, from pacific islands

Michael D. Kern / Green tree python (Morelia viridis) maroon morph, captive, from SE Asia

Michael D. Kern / Ball python (Python regius) albino morphs hatching.

Michael D. Kern / Green tree python (Morelia viridis) captive, from SE Asia and Australia

Michael D. Kern / Green tree python (Morelia / Chondopython viridis) maroon morph, coiled on branch, captive, from Australia and SE Asia

Michael D. Kern / Green tree python (Morelia / Chondopython viridis) juvenile coiled on branch, captive, from Australia and SE Asia

Michael D. Kern / Green tree python (Morelia / Chondopython viridis) juvenile coiled on branch, captive, from Australia and SE Asia

Michael D. Kern / Green tree python (Morelia / Chondopython viridis) view from above, captive, from Australia and SE Asia