Blue merle tricolour dogs

ShetlandShpdogBlue2 wb...
© Unknown
CC-BY-SA-3.0

Australian Shepherd 600..
© sannse
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Shetland Sheepdog.JPG
© User Zozza on sv.wik..
Public Domain

Aussie-blacktri.jpg
© User Pharlap on en.w..
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Australian Shepherd.jpg
© Unknown
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Smooth Collie 600.jpg
© Unknown
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Australian Shepherd agi..
© Pharaoh Hound
CC BY 2.5

Rough Collie blue merle..
© Flickr user gwyrah
CC BY 2.0

Shetland Sheepdog blue ..
© Flickr user jimthomp..
CC BY-SA 2.0

Australianshepherd01.jpg
© No machine-readable ..
CC BY-SA 2.5

Aussi.jpg
© Christoph Aeschlimann
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NordJW-06 Mudpaws Duke ..
© Unknown
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Miniature Australian Sh..
© Mike from Baltimore,..
CC BY 2.0

Australian Shepherd blu..
© Ron Armstrong from H..
CC BY 2.0

Shetland Sheepdog blue ..
© Ron Armstrong from H..
CC BY 2.0

Parti-colour Longhaired..
© Raven Underwood
CC BY 2.0

Silver Dapple Smooth Ha..
© Erwin Loh
CC BY 2.5

Shetland Sheepdog agili..
© Jens Gyldenkærne Cla..
CC BY-SA 2.0

Koolie-blue merle.jpg
© Tjukurpa Koolie Club..
CC BY 3.0

Border Collie (Roy) en ..
© Jean-Michel Castelan..
CC BY-SA 3.0