Mark Carwardine / Ring-tailed lemur {Lemur catta} baby on mother's back, portrait, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} baby on mother's back, portrait, Berenty Private Reserve, southern Madagascar

Ernie Janes / Long necked woman with many neck rings, belonging to Padaung Tribe, Thailand

Nick Turner / Gloucester old spot domestic pig (Sus scrofa domestica) head portrait with ring through snout and ears covering eyes, UK.

Nick Turner / Freerange Gloucester old spot domestic pig (Sus scrofa domestica) portrait with ears covering eyes, UK.

Markus Varesvuo / Ring Ouzel female (Turdus torquatus) Finland May

Steve Gettle / Ring-necked Duck (Aythya collaris) male flying, Island Lake Recreation Area, Michigan

Nick Garbutt / Young Ring-tailed lemur (Lemur catta) 6-8 weeks, clinging to mother, Berenty Private Reserve, southern Madagascar, November

Nick Garbutt / Young Ring-tailed lemur (Lemur catta) 6-8 weeks, clinging to mother, Berenty Private Reserve, southern Madagascar, November

Simon Colmer / Early Purple Orchids (Orchis mascula) flowering, Hollingbury Ring, Brighton, Sussex, UK, May

Hiroya Minakuchi / Beluga (Delphinapterus leucas) blowing toroidal bubble ring, Vancouver Aquarium, Canada

Charlie Summers / Standing stones in the Neolithic henge of the Ring of Brodgar, built between 2500 and 2000 BC and originally composed of some 60 stones although only 27 remain standing today. Orkney Islands, Scotland...

Nick Garbutt / Ring-tailed Lemur (Lemur catta) sun basking at dawn. Berenty Private Reserve, southern Madagascar.

Nick Garbutt / Three Ring-tailed Lemurs (Lemur catta) sun basking at dawn. Berenty Private Reserve, southern Madagascar. (digitally stitched image)

Jasper Doest / Ring-tailed Lemur (Lemur catta) mother with young, Netherlands

LYNN M. STONE / Domestic dog, German short-haired pointer retrieving a dead male Ring-necked pheasant, Connecticut, USA

Peter Cairns / naturepl.com / Close up of leg rings on Eurasian Crane (Grus grus), Hornborga, Sweden, April

David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Comb Jelly {Bollinopsis ssp} caught with 1m ring net between 0 and 150m, comb plates, Mid-Atlantic Ridge, North Atlantic Ocean

Sebastian Kennerknecht / Ring-necked Duck (Aythya collaris) drake in breeding plumage calling, Santa Cruz, Monterey Bay, California

Jeff Vanuga / Native American Teepee rings on Table Mountain near Dubois, Shoshone reserve, Wyoming, USA, May 2009

Fiona Rogers / Ring-tailed Lemur (Lemur catta) infant (less than 1 month) chasing tail of adult lemur. Berenty Private Reserve, Madagascar. Oct 2008.

Fiona Rogers / Ring-tailed Lemur (Lemur catta) male greeting infant. Berenty Private Reserve, Madagascar. Oct 2008.

Fiona Rogers / Ring-tailed Lemur (Lemur catta) female carrying baby one her back, sitting and alert. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) male wrist-marking the tail, lip lared and ears back, during territorial confrontation. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) male scent marking. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) female with infant (less than one month) portrait. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) female with infant (less than one month) portrait. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) female with infant (less than one month) riding on her back. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) 'sunning' in the early morning light to warm themselves. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) female carrying baby and scent marking. Berenty Private Reserve, Madagascar. Oct 2008.

Anup Shah / Ring-tailed Lemur (Lemur catta) female carrying infant less than one month on her back. Berenty Private Reserve, Madagascar. Oct 2008.

Edwin Giesbers / Ring-tailed lemur (Lemur catta) with young, Berenty Reserve, Madagascar

Edwin Giesbers / Ring-tailed lemur (Lemur catta) portrait, Berenty Reserve, Madagascar, Madagascar

Edwin Giesbers / Ring-tailed lemur (Lemur catta) portrait, Berenty Reserve, Madagascar

Inaki Relanzon / Ring-tailed lemur (Lemur catta) group sitting on ground, sunning in morning sun, Berenty private reserve, south Madagascar

Inaki Relanzon / Ring-tailed lemur (Lemur catta) looking down from large spiney plant, Itampolo, South Madagascar

Inaki Relanzon / Ring-tailed lemur (Lemur catta) feeding on fruit in tree, Berenty private reserve, south Madagascar

Kevin Schafer / Ring-tailed Lemur (Lemur catta) in Octopus tree, Mantady National Park, Madagascar

Thomas Marent / Black Lemur (Lemur macaco) male, Lokobe Nature Special Reserve, Madagascar

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale trio blowing toroidal bubble rings, play behavior, vulnerable, Shimane Aquarium, Japan

Jouan & Rius / Ring-tailed Lemur (Lemur catta) eating flower of E {Euphorbia sp}, dry forest of Berenty reserve, South Madagascar

Jouan & Rius / Hand of Ring-tailed Lemur (Lemur catta), dry forest of Berenty reserve, South Madagascar

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale blowing toroidal bubble ring, Shimane Aquarium, Japan

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale blowing toroidal bubble ring, Shimane Aquarium, Japan

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale blowing toroidal bubble ring, Shimane Aquarium, Japan

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale blowing toroidal bubble ring, Shimane Aquarium, Japan

Hiroya Minakuchi / Beluga (Delphinapterus leucas) whale blowing toroidal bubble ring, Shimane Aquarium, Japan

Pete Oxford / Ring-tailed Lemur (Lemur catta) walking across rocks in the Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) portrait on rocks in the Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Crowned Lemur (Eulemur coronatus) male on 'tsingy', vulnerable, Ankarana Special Reserve, northern Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) portrait on rocks overlooking the Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) portrait on rocks in the Andringitra Mountains, vulnerable, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) mother and young, vulnerable, near Andringitra Mountains, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) mother and young, vulnerable, near Andringitra Mountains, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) portrait, vulnerable, overlooking the Andringitra Mountains, south central Madagascar

Pete Oxford / Ring-tailed Lemur (Lemur catta) walking across open ground, vulnerable, Berenty Reserve, southern Madagascar

Pete Oxford / Black and White Ruffed Lemur (Varecia variegata variegata) in rainforest near Mantadia National Park, endangered, Madagascar

Pete Oxford / Verreaux's Sifaka (Propithecus verreauxi) hopping across open ground, vulnerable, Berenty Reserve, southern Madagascar

Pete Oxford / Aye-aye (Daubentonia madagascariensis) one of the more bizarre mammals in the world, their peculiar features include huge ears, bushy tail, long shaggy coast, rodent-like teeth and a skeletal 'probe-l...

Pete Oxford / Coquerel's Sifaka (Propithecus coquereli) mother and baby, Ankarafantsika Strict Nature Reserve, western Deciduous forest, Madagascar

Pete Oxford / Coquerel's Sifaka (Propithecus coquereli) in western deciduous forest, Ankarafantsika Strict Nature Reserve, Madagascar

Pete Oxford / Diademed Sifaka (Propithecus diadema), Mantadia National Park, Madagascar

Nick Garbutt / Adult Eastern ring tailed Mongoose {Galidia elegans elegans} portrait on fallen log, Marojejy National Park, Madagascar.

Pete Oxford / Ring-tailed lemur on forest floor {Lemur catta} Berenty Private Reserve Madagascar

Rod Williams / Ring-tailed lemur {Lemur catta} infant on adults back. Captive. Madagascar. Lemurs

John Waters / Ring-tailed lemur in tree {Lemur catta} Madagascar

Doug Perrine / Ring-eye jawfish male expels larvae after brooding eggs in mouth for a week {Opistognathus sp} Borneo (Non-ex).

Gerry Ellis / Ring-tailed Lemur (Lemur catta) portrait, Madagascar

Konrad Wothe / Brown Mouse Lemur (Microcebus rufus), Madagascar

Gerry Ellis / Ring-tailed Lemur (Lemur catta) group, Washington Park Zoo, Portland, Oregon, endemic to Madagascar

Gerry Ellis / Ring-tailed Lemur (Lemur catta) sitting on tree branch, Madagascar

Fred Bavendam / Ring-tailed Cardinalfish (Apogon aureus) male protectively carrying a fertilized egg mass in his mouth while they incubate, Bali, Indonesia

Pete Oxford / Ring-tailed lemur {Lemur catta} feeding at cactus flower Madagascar, Berenty

Pete Oxford / Ring-tailed lemur with young. (Lemur catta) Madagascar Berenty private reserve

Pete Oxford / Ring tailed lemur with young.,Berenty PR, Madagascar

Pete Oxford / Ring tailed lemur. Madagascar, Berenty Private Reserve

Pete Oxford / Portrait of Ring tailed lemur (Lemur catta) Madagascar. Berenty Private Reserve.

Pete Oxford / Ring-tailed lemur male licking nose, Madagascar

Pete Oxford / Ring-tailed lemur with young, Berenty Reserve, Madagascar

Pete Oxford / Ring-tailed lemur carrying young, Berenty Reserve, Madagascar

Jabruson / Male Red billed quelea at nest ring, Tsavo NP, Kenya

Adrian Davies / Cross section of the spathe of a Wild arum / Lords and Ladies / Cuckoo pint (Arum maculatum), showing in succession (from below) female flowers, male flowers, and sterile flowers forming a ring of hai...

Markus Varesvuo / Ring Ouzel (Turdus torquatus) eating a berry, Uto Finland, April. Fascinating birds bookplate.

Mark Carwardine / Ring-tailed lemur {Lemur catta} feeding on cactus, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} baby on mother's back, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} feeding on cactus, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} baby suckling from mother, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} mother carrying baby on back, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} mother and baby with cactus, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} walking acroos ground, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} baby, portrait, Berenty Private Reserve, southern Madagascar

Mark Carwardine / Ring-tailed lemur {Lemur catta} feeding on cactus, Berenty Private Reserve, southern Madagascar