LYNN M. STONE / Portrait of male Boxer, light brindle coloured with natural ears, standing by lake shore, Illinois, USA

Mark Raycroft / Bull Terrier (Canis familiaris)

Mark Raycroft / Boxer (Canis familiaris) brindle female standing in grass

David Kjaer / Yellow-barred brindle moth (Acasis viretata) Wiltshire, England, UK, July.

Jiri Lochman / Subtropical rainforest with waterfalls at Brindle Creek, Border Ranges National Park, Gondwana Rainforest UNESCO Natural World Heritage Site, New South Wales, Australia.

Jiri Lochman / Subtropical rainforest with Brindle Creek, Border Ranges National Park, Gondwana Rainforest UNESCO Natural World Heritage Site, New South Wales, Australia.

Mark Taylor / Brindle-and-white Lurcher puppy, age 8 weeks, with crossed paws.

Mark Taylor / Brindle Lurcher dog puppy lying head up.

Mark Taylor / Brindle Lurcher dog puppy in play-bow.

Mark Taylor / Brindle Lurcher dog puppy lying head up with ragger toy.

Mark Taylor / Brindle Lurcher dog puppy lying head up.

Mark Taylor / Brindle Lurcher dog puppy lying.

Mark Taylor / Brindle Lurcher dog puppy licking his paw.

Mark Taylor / Brindle Lurcher dog puppy lying head up.

Mark Taylor / Brindle Lurcher dog puppy lying head up.

Mark Taylor / Brindle Lurcher dog puppy lying.

Tony Wu / Southern right whale (Eubalaena australis) male brindle calf at surface, born with white and black pigmentation, photographed with the permission of the Department of Environmental Affairs, South Afri...

Mark Taylor / Brindle Lurcher dog, Kite, in play-bow.

Mark Taylor / Brindle Lurcher dog, Kite, in play-bow.

Mark Taylor / Brindle boxer puppy sitting.

Mark Taylor / Brindle Boxer puppy sitting looking up.

Mark Taylor / Brindle Boxer puppy sitting looking alert.

Mark Taylor / Brindle Lurcher dog, Kite, in play-bow.

Mark Raycroft / Boxer (Canis familiaris) brindle male playing with stick

Mark Raycroft / Boxer (Canis familiaris), brindle and fawn colored pair

Mark Raycroft / Boxer (Canis familiaris), brindle and fawn-colored pair sitting on dock

Mark Raycroft / Boxer (Canis familiaris) pair, brindle and fawn colored dogs

Mark Raycroft / Bulldog (Canis familiaris) brindle in fall leaves

Mark Raycroft / Bulldog (Canis familiaris) brindle

Mark Taylor / Dark brindle French Bulldog pup, Bacchus, 9 weeks old.

Mark Taylor / Dark brindle French Bulldog pup, Bacchus, 9 weeks old, in play-bow stance.

Mark Taylor / Dark brindle French Bulldog pup, Bacchus, 9 weeks old, sitting.

Mark Taylor / Dark brindle French Bulldog puppy, Bacchus, 9 weeks, with Guinea pig.

LYNN M. STONE / Boxer dog wtih cropped ears, portrait in frosty woodland, USA

LYNN M. STONE / Brindle Boxer dog with cropped ears, sitting in oak leaves, USA

LYNN M. STONE / Boxer dog with cropped ears, portrait among frosty grass.

LYNN M. STONE / Male boxer dog sitting in autumn leaves.

LYNN M. STONE / Male boxer portrait in autumn leaves.

LYNN M. STONE / Male boxe dog sitting in sitting in autumn woodland.

LYNN M. STONE / Male boxer dog portrait, by lake reflecting autumn colours.

LYNN M. STONE / Male boxer portrait, by lake reflecting autumn colours.

LYNN M. STONE / Male boxer dog portrait, by lake reflecting autumn colours.

LYNN M. STONE / Male boxer dog portrait.

Petra Wegner / Male Whippet portrait, brindle and white

Petra Wegner / Male Whippet, brindle and white, standing with tail between legs

Robert Thompson / Yellow-barred brindle moth (Acasis viretata) Argory Moss, Derrycaw, County Armagh, Northern Ireland, UK, April

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks, with yellow guinea pig.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks, with white Maine Coon-cross kitten.

Mark Taylor / Brindle Lurcher dog, and brown Shih-tzu.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks, with a guinea pig.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks, with white Maine Coon-cross kitten.

Mark Taylor / Brindle Lurcher dog, in play-bow, ready to pounce at Brown Shih-tzu.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks, with colourpoint rabbit.

Mark Taylor / Brindle-and-white Whippet puppy, 9 weeks.

Robert Thompson / Clouded-bordered brindle moth (Apamea crenata) camouflaged on branch, Portadown, County Armagh, Northern Ireland, UK, May

LYNN M. STONE / Portrait of male Boxer, light brindle coloured with natural ears, standing by lake shore, Illinois, USA

LYNN M. STONE / Portrait of Boxer, dark brindle coloured with cropped ears, standing in show stack posture, under yellow maple, October, Illinois, USA

LYNN M. STONE / Portrait of Boxer, light brindle coloured with cropped ears, lying down in leaves under yellow maple, October, Illinois, USA

LYNN M. STONE / Head portrait of Boxer, light brindle coloured with cropped ears, Illinois, USA

LYNN M. STONE / Head portrait of Boxer, light brindle coloured with cropped ears, Illinois, USA

LYNN M. STONE / Portrait of female Boxer, dark brindle coloured with cropped ears, standing in show stack posture by lakeshore, Illinois, USA

LYNN M. STONE / Portrait of male Boxer light brindle coloured, with natural ears, sitting on grass by lake, Illinois, USA

LYNN M. STONE / Head portrait of male Boxer, light brindle coloured with natural ears, standing in show stack posture, in Autumn, Illinois, USA

LYNN M. STONE / Head portrait of male Boxer, light brindle coloured with natural ears, Illinois, USA

LYNN M. STONE / Dark brindle Boxer with cropped ears and docked tail, standing next to ragwood and late summer field plants, Illinois, USA

LYNN M. STONE / Three Boxers, two fawn coloured, one dark brindle coated, with cropped ears, sitting on lawn, Illinois, USA

LYNN M. STONE / Domestic dog, dark brindle Boxer, male standing beside river, East Haddam, Connecticut, USA (GH)

Robert Thompson / Slender brindle moth {Apamea scolopacina} Rostrevor Oakwood NNR, County Down, Northern Ireland, UK, August

Mark Taylor / Brindle-and-white odd-eyed mongrel puppy, lying down

Mark Taylor / Brindle-and-white mongrel puppy, Brec, standing up on hind legs

Mark Raycroft / Staffordshire Bull Terrier (Canis familiaris) portrait

Petra Wegner / Brindle Sloughi grooming

Petra Wegner / Brindle Sloughi sitting portrait

Petra Wegner / Brindle Sloughi standing in show stack / pose

PREMAPHOTOS / Yellow-barred Brindle Moth (Acasis viretata) well camouflaged on a rock in daytime, UK

Jane Burton / Girl teaching Staffordshire Bull Terrier cross pup to give a paw

Jane Burton / Brindle and white Boxer, 9-week pup, lying down with front paws crossed *Not available for use on 2013 retail calendar covers in the USA.

Jane Burton / Brindle and white Boxer pups, 9-week female with 7-week half brother, playing together

Jane Burton / Lurcher (Deerhound x) 10-week portrait amongst frosty grass

Jane Burton / Staffordshire Bull Terrier pup, 18 weeks old, wearing a Halti head collar, led by Bradley (8 years old)

Jane Burton / Rescue blue-brindled Lurcher from Celia Cross Greyhound Trust

Jane Burton / Red Boxer pup, 8 weeks old, with his brindle half brother, 7 weeks old, lying down and panting

Jane Burton / Red Boxer pup, 8 weeks old, with his brindle half brother, 7 weeks old

Jane Burton / Mahogany brindle Boxer pup, 4 months old, lying down

Jane Burton / Brindle Lurcher pup lying down with head up, 10 weeks old

Jane Burton / Red Boxer pup, 8 weeks old sitting with his brindle half brother, 7 weeks old

Jane Burton / Staffordshire Bull Terrier lying with chin on the floor.

Jane Burton / Brindle and white Boxer pup, 9 weeks old, standing.

Jane Burton / Brindle and white Boxer pups, 7 and 9 weeks old, playing together.

Jane Burton / Brindle fawn Boxer standing with her two pups.

Jane Burton / Brindle Boxer mother lying with pup.