Mark Taylor / Black and white Border collie looking sideways at black and white kitten. NOT AVAILABLE FOR BOOK USE

Klein & Hubert / Tabby and white semi-longhaired kitten in defensive posture, arching back and fluffing up tail as two Border collie puppies approach, France.

Mark Taylor / Black-and-white Border Collie bitch, with black-and-white tuxedo kitten, 10 weeks NOT AVAILABLE FOR BOOK USE

Mark Taylor / Black-and-white Border Collie bitch, with black-and-white tuxedo kitten, 10 weeks old. NOT AVAILABLE FOR BOOK USE

Mark Taylor / Black-and-white Border Collie bitch, with black-and-white tuxedo kitten, 10 weeks NOT AVAILABLE FOR BOOK USE

Petra Wegner / Border Collie puppy, 13 weeks.

Petra Wegner / Border Collie puppy, 14 weeks, Australian red-white.

Mark Taylor / Tricolour Border Collie puppy.

Mark Taylor / Tricolour Border Collie puppy in play-bow.

Mark Taylor / Border Collie bitch, running towards the camera.

Mark Taylor / Black-and-white Border Collie looking at ginger kitten. NOT AVAILABLE FOR BOOK USE

Jane Burton / Black-and-white Border Collie bitch lying chin on floor with black-and-white kitten. NOT AVAILABLE FOR BOOK USE

Mark Taylor / Playful Border Collie puppies, 6 weeks.

Mark Taylor / Border Collie puppy portrait.

Mark Taylor / Border Collie puppy.

Jane Burton / Border Collie having a good shake.

Jane Burton / Sable Border Collie puppy, 9 weeks, looking over his shoulder.

Jane Burton / Border Collie with one of her puppies, 5 weeks, yawning.

Jane Burton / Two Sable Border Collie puppies.

Jane Burton / Chocolate registered Border Collie dog, 9 months.

Jane Burton / White-faced black-and-white Border Collie puppy.

Jane Burton / Portrait of Black-and-white Border Collie bitch.

Jane Burton / Border Collie bitch sitting looking up into the camera.

Jane Burton / Cute Border Collie puppy lying.

Jane Burton / Sable Border Collie puppy, 9 weeks, sitting.

Ernie Janes / Border Collie, working dog looking through gate, Wales, UK

Ernie Janes / Border collie, head portrait, Norfolk, UK, May

Mark Taylor / Border Collie-cross bitch, Bliss, snarling, looking aggressive.

Mark Taylor / White-and-merle Border Collie-cross puppy, Ice, 14 weeks, wearing a Father Christmas hat.

Jane Burton / Sable Border Collie bitch, with chin on sleeping puppy

Jane Burton / Odd-eyed Border Collie pup, 12 weeks old, lying with black and white kitten, 6 weeks old NOT AVAILABLE FOR BOOK USE

Jane Burton / Fawn Dutch rabbit with sleeping Sable-and-white Border Collie pup. NOT AVAILABLE FOR BOOK USE

Mark Raycroft / Border Collie (Canis familiaris), North America

Mark Raycroft / Border Collie (Canis familiaris) jumping over branch

Mark Raycroft / Border Collie (Canis familiaris) herding sheep in pasture

Mark Raycroft / Border Collie (Canis familiaris) five adults sitting in a row

Mark Raycroft / Border Collie (Canis familiaris) adult with three tennis balls in its mouth, waiting to play fetch

Mark Raycroft / Border Collie (Canis familiaris) puppy looking through fence

Mark Raycroft / Border Collie (Canis familiaris) three puppies in metal bucket

Mark Raycroft / Border Collie (Canis familiaris) mother with two puppies

Lynn M. Stone / Border Collie sitting in snow. Illinois, USA. November.

Mark Taylor / RF - Red merle Border Collies lying down (This image may be licensed either as rights managed or royalty free.)

Mark Taylor / Black-and-white Border Collie puppy, lying down.

Pascal Tordeux / Shepherd with flock of sheep and dogs in autumn, French Alps, France. November 2013.

Klein & Hubert / Bearded collie female lying on alpine pasture in spring, Austria.

Klein & Hubert / Bearded collie female lying on alpine pasture in spring, Austria.

Klein & Hubert / Bearded collie female in alpine pasture in spring, Austria.

Klein & Hubert / Bearded collie female sitting in alpine pasture in spring, Austria.