Jane Burton / Chocolate Labrador Retriever puppy, sitting and looking up.

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) puppy, North America

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris)

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) adult portrait

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) adult portrait

Mark Raycroft / Chocolate Labrador Retriever (Canis familiaris) portrait of a puppy sitting next to blooming chives in herb garden

Lynn M. Stone / Chocolate Labrador retriever pup lying in Phlox and Paccasandra flowers, Connecticut, USA. May.

Lynn M. Stone / Chocolate labrador retriever, two puppiessitting in spring flowers. Haddam, Connecticut, USA. June.

Lynn M. Stone / Chocolate labrador retriever, adult and puppy in Common bluet (Houstonia caerulea) field. Haddam, Connecticut, USA. May.

Lynn M. Stone / Chocolate labrador retriever, two puppies lying in Common bluet (Houstonia caerulea) field. Haddam, Connecticut, USA. May.

Lynn M. Stone / Chocolate labrador retriever puppy lying in Common bluet (Houstonia caerulea) field. Haddam, Connecticut, USA. May.

Lynn M. Stone / Three breed colors of Labrador Retriever - black, chocolate and golden - standing in water, Rhode Island, USA. August.

Lynn M. Stone / Black and chocolate Labrador Retrievers playing with toy in bay, Charlestown, Rhode Island, USA. Non-ex.

Lynn M. Stone / Labrador retriever, three different colours together, black, yellow, chocolate, at edge of salt marsh, Charlestown, Rhode Island, USA, June.

Lynn M Stone / Chocolate Labrador retriever in Wild Mustard flowers, Colchester. Connecticut, USA

Mark Taylor / RF- Chocolate Labrador puppy, 3 months, looking up into the camera. (This image may be licensed either as rights managed or royalty free.)

Jane Burton / Chocolate Labrador Retriever puppy asleep.

Jane Burton / Yellow and Chocolate Labrador Retriever puppies.

Jane Burton / Chocolate Labrador retriever puppy with rope toy, 6 weeks.

Jane Burton / Two chocolate Labrador retriever puppies, one playing with rope toy, 6 weeks.

Lynn M Stone / Chocolate Labrador Retriever swimming in pond, retrieving training bumper, Connecticut, USA

Lynn M Stone / Portrait of chocolate Labrador Retriever with retrieved Mallard duck, standing at edge of pond, Madison, Wisconsin, USA

Lynn M Stone / Head portrait of Chocolate Labrador Retriever standing at edge of pond, Wisconsin, USA

Lynn M Stone / Chocolate Labrador Retriever standing at edge of pond, Wisconsin, USA

Lynn M Stone / Chocolate Labrador Retriever on retreive, running / splashing into pond, Wisconsin, USA

Lynn M Stone / Chocolate Labrador Retriever on retreive, running / splashing into pond, Wisconsin, USA

Lynn M Stone / Portrait of male chocolate Labrador Retriever sitting at edge of pond, Wisconsin, USA

Lynn M Stone / Chocolate Labrador Retriever on retreive, swimming, Madison, Wisconsin, USA

Lynn M Stone / Portrait of chocolate Labrador Retriever sitting at pond edge, Wisconsin, USA

Lynn M Stone / Domestic dog, female Chocolate Labrador Retriever by flowering rose bush, LaFox, Illinois, USA (GJ)

Lynn M Stone / Domestic dog, Chocolate Labrador Retriever sitting by blue garden flowers, La Fox, Illinois (GJ) USA

John Cancalosi / Chocolate Labrador Retriever lying down in field with dandelions, Colorado, USA

Jane Burton / Chocolate Labrador Retriever pup hiding in a cloth bag.

Jane Burton / Chocolate Labrador Retriever pup lying with chocolate Lop rabbit. NOT AVAILABLE FOR BOOK USE

Jane Burton / Sleeping chocolate Labrador retriever pup wearing a Santa hat and yellow one wearing reindeer antlers.

Jane Burton / Yellow and Chocolate Labrador Retriever pups lying down with chins on the floor.

Jane Burton / Chocolate Labrador Retriever pup lying on its stomach.

Jane Burton / Chocolate Labrador Retriever puppy lying over a yellow retriever puppy.

Jane Burton / Yellow and Chocolate Labrador Retriever pups chewing on Christmas decorations.

Jane Burton / Yellow and Chocolate Labrador Retriever pups lying down

Jane Burton / Chocolate Birman-cross kitten standing on a chocolate Labrador Retriever pup's back NOT AVAILABLE FOR BOOK USE

Jane Burton / Chocolate Labrador Retriever pup lying down with chocolate Birman-cross kitten. NOT AVAILABLE FOR BOOK USE

Jane Burton / Chocolate Labrador Retriever pup playing with chocolate Birman-cross kitten. Note the kitten's arched back and hairs standing on end in play posture. NOT AVAILABLE FOR BOOK USE

Jane Burton / Yellow and Chocolate Labrador Retriever pups lying down together, chins on the floor

Jane Burton / Yellow and Chocolate Labrador Retriever pups lying down together

Jane Burton / YellowLabrador Retriever pup standing over a Chocolate Labrador Retriever pup lying down.

Jane Burton / Chocolate Labrador Retriever pup sitting down.

Jane Burton / Yellow and Chocolate Labrador Retriever pups with wellies under a blue umbrella.