Konrad Wothe / Estuarine / Saltwater crocodile (Crocodylus porosus) amongst mangrove roots, Daintree National Park, Queensland, Australia, October

Yashpal Rathore / Mugger crocodile (Crocodylus palustris) basking in the sunshine, Rangantitu Bird Sanctuary, India,

Yashpal Rathore / Mugger crocodile (crocodylus palustris) basking in sun, Tadoba National Park, India

Ernie Janes / Marsh crocodile (Crocodylus palustris) close up of skin, captive.

Ernie Janes / Marsh crocodile (Crocodylus palustris) close up portrait, captive, occurs in Iran, Pakistan, Nepal, India and Sri Lanka.

Andy Rouse / Mugger crocodile (Crocodylus palustris) at water's edge at sunset, Ranthambhore, India.

Pete Oxford / Mugger crocodile (Crocodylus palustris) on shore, National Chambal Gharial Wildlife Sanctuary, Madhya Pradesh, India.

Pete Oxford / Mugger crocodile (Crocodylus palustris) National Chambal Gharial Wildlife Sanctuary, Madhya Pradesh, India.

David Pattyn / Marsh Crocodile / Mugger (Crocodylus palustris) attacking and killing an Indian sambar deer (Cervus unicolor) while swimming in a lake. Ranthambore National Park, Rajasthan, India.

Enrique Lopez-Tapia / Mugger crocodile (Crocodylus palustris) Royal Chitwan National Park, Nepal.

Michael Pitts,Michael Pitts / American crocodile (Crocodylus acutus) hatchling in the shallows of a mangrove swamp. Offshore Island, Belize.

Pete Oxford / Cuban Crocodile (Crocodylus rhombifer) thermoregulating near Zapata Swamp National Park, Cuba

Pete Oxford / Cuban Crocodile (Crocodylus rhombifer) near Zapata Swamp National Park, Cuba

Pete Oxford / Cuban Crocodile (Crocodylus rhombifer) group in farm near Zapata Swamp National Park, Cuba

Pete Oxford / Cuban Crocodile (Crocodylus rhombifer) near Zapata Swamp National Park, Cuba

Pete Oxford / Cuban Crocodile (Crocodylus rhombifer) thermoregulating near Zapata Swamp National Park, Cuba

Mike Potts / Cuban crocodile {Crocodylus rhombifer} Lanier swamp, Cuba

Mike Potts / Cuban crocodile basking on bank {Crocodylus rhombifer} Lanier swamp, Cuba

Mike Potts / Cuban crocodile {Crocodylus rhombifer} Lanier swamp, Cuba

Mike Potts / Cuban crocodile {Crocodylus rhombifer} Lanier swamp, Cuba

Mike Potts / Lanier swamp, habitat of Cuban crocodile, Cuba

Mike Potts / Cuban crocodile {Crocodylus rhombifer} Lanier swamp, Cuba

Patricio Robles Gil / Morelet's Crocodile (Crocodylus moreletii) endangered, resting on riverbank, Corona River, Tamaulipas, Mexico

Doug Wechsler / Cuban crocodile on farm {Crocodylus rhombifer} Zapata swamp Cuba

Joel Sartore / Photo Ark / Mugger crocodile (Crocodylus palustris) with mouth open, head portrait, Bahitoo Farm, Abu Dhabi. Captive, occurs in southern Asia.

Joel Sartore / Photo Ark / Mugger crocodile (Crocodylus palustris) with mouth open, portrait, Bahitoo Farm, Abu Dhabi. Captive, occurs in southern Asia.

Joel Sartore / Photo Ark / Mugger crocodile (Crocodylus palustris) eye detail, Bahitoo Farm, Abu Dhabi. Captive, occurs in southern Asia.

Joel Sartore / Photo Ark / Mugger crocodile (Crocodylus palustris) with mouth open, head portrait, Bahitoo Farm, Abu Dhabi. Captive, occurs in southern Asia.

Ripan Biswas / Marsh crocodile (Crocodylus palustris) leucistic, resting among mangroves, Sunderban tiger reserve, West Bengal, India.

Andy Rouse / Bengal tiger (Panthera tigris) sub adult with Mugger crocodile (Crocodylus palustris) Ranthambhore, India. Medium repro only

Enrique Lopez-Tapia / Saltwater crocodile (Crocodylus porosus) in swamp. Kakadu National Park, Northern Territory, Australia.