Roland Seitre / Baby Rothschild's Porcupine (Coendou rothschildi) on the palm of conservation volunteer. La Marinas Wildlife Rescue Centre, Costa Rica, 2008.

Roland Seitre / Baby Rothschild's Porcupine (Coendou rothschildi) being bottle-fed. La Marinas Wildlife Rescue Centre, Costa Rica, 2008.

Alex Mustard / Spotted porcupinefish (Diodon hystrix) swimming in open water above a coral reef, West Bay, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Tim Fitzharris / Common Porcupine (Erethizon dorsatum) eating an apple, North America

Konrad Wothe / Common Porcupine (Erethizon dorsatum), North America

Peter Blackwell / Back view of Crested porcupine {Hystrix cristata} walking away, Central Kenya

Tim Fitzharris / Common Porcupine (Erethizon dorsatum) portrait, Montana

Gerry Ellis / Common Porcupine (Erethizon dorsatum) climbing tree, North America

Tim Fitzharris / Common Porcupine (Erethizon dorsatum) feeding on fruit, Montana

Matthias Breiter / Common Porcupine (Erethizon dorsatum) in willow tree near the Denali highway, Alaska

Michael Quinton / Common Porcupine (Erethizon dorsatum) feeding on Pussy Willow (Salix discolor) in spring, Alaska

Michael Quinton / Common Porcupine (Erethizon dorsatum) sitting in a tree in winter, Yellowstone National Park, Wyoming

Michael Quinton / Common Porcupine (Erethizon dorsatum) feeding on Pussy Willow (Salix discolor) in spring, Alaska

Konrad Wothe / North American porcupine with young (Erethizon dorsatum) Alaska, USA, July

Roland Seitre / Baby Rothschild's Porcupine (Coendou rothschildi) climbing tree trunk. Captive. La Marinas Wildlife Rescue Centre, Costa Rica, 2008.

Roland Seitre / Conservation volunteer with a baby Rothschild's Porcupine (Coendou rothschildi). La Marinas Wildlife Rescue Centre, Costa Rica, 2008.

Roland Seitre / Conservation volunteer with a baby Rothschild's Porcupine (Coendou rothschildi). La Marinas Wildlife Rescue Centre, Costa Rica, 2008.

Konrad Wothe / Common Porcupine (Erethizon dorsatum) in tree, North America

ZSSD / Common Porcupine (Erethizon dorsatum) close-up

ZSSD / Common Porcupine (Erethizon dorsatum) adult in tree, native to North America

Luiz Claudio Marigo / Porcupine {Coendou mexicanum} feeding in tree, Gran Chaco NP, Bolivia

Larry Michael / Underside of North american porcupine showing teeth {Erethizon dorsatum} captive, Illinois, USA

Konrad Wothe / Common Porcupine (Erethizon dorsatum) portrait in tree, North America

Konrad Wothe / Common Porcupine (Erethizon dorsatum) detail of quills, North America

Konrad Wothe / Common Porcupine (Erethizon dorsatum) baby, North America

Konrad Wothe / Common Porcupine (Erethizon dorsatum) baby climbing in tree, North America

Konrad Wothe / Common Porcupine (Erethizon dorsatum) mother and baby in tree, North America

Michael Quinton / Common Porcupine (Erethizon dorsatum) feeding on Pussywillow (Salix discolor) in the spring, Alaska

Michael Quinton / Common Porcupine (Erethizon dorsatum) feeding on Mistletoe (Phoradendron serotinum) in winter, Island Park, Idaho

Patricio Robles Gil / North american porcupine in tree {Erethizion dorsatum} Chihuahua, Mexico

Richard Du Toit / Damage to tree caused by Porcupine {Hystrix sp} Chobe NP, Botswana

Pete Oxford / Lion {Panthera leo} male with porcupine quill in muzzle, Okavango Delta, Botswana

Peter Blackwell / Crested porcupine {Hystrix cristata} Central Kenya

Jabruson / Porcupine fish {Diodon hystrix} made into tourist curio for sale on Sal Is, Cape Verde Islands

Tony Heald / Porcupine walking {Hystrix africaeaustralis} Damaraland, Namibia

Tony Heald / Porcupine portrait {Hystrix africaeaustralis} Damaraland, Namibia

Tony Heald / Porcupine at water {Hystrix africaeaustralis} Damaraland, Namibia

Tony Heald / Porcupine drinking {Hystrix africaeaustralis} Damaraland, Namibia

Peter Blackwell / Crested porcupine {Hystrix cristata} foraging on ground, Central Kenya, Africa

Paul D Stewart / Woodcut illustration of Crested Porcupine (Hystrix cristata) with colouring. From Gesner's 'Icones Animalium' publ. Christof Froschover, Zurich, 1560. Of Gesner's many woodcuts this is one of the more...

Peter Blackwell / Two Crested porcupines {Hystrix cristata} foraging on ground, Kenya

Peter Blackwell / Crested porcupine portrait {Hystrix cristata} Central Kenya