Neil Aldridge / Spaniel gundog holding a dead female Ring-necked pheasant (Phasianus colchicus) in its mouth during a winter shoot on shooting estate, southern England, UK. January.

Neil Aldridge / Spaniel gundog hauling itself out of a lake carrying a dead female Ring-necked pheasant (Phasianus colchicus) shot during a winter country shoot on shooting estate, southern England, UK. January.

Neil Aldridge / Wet labrador gundog emerging from lake with a male Ring-necked pheasant (Phasianus colchicus) in its mouth during a winter shoot on shooting estate, southern England, UK. January.

Neil Aldridge / Spaniel gundog held by its owner, during a winter shoot on shooting estate, southern England, UK, January.

LYNN M. STONE / Golden Retriever puppy portrait, 7 weeks, Madison, Connecticut, USA

Bryan and Cherry Alexander / Heelwork to Music class contestants, Gundog Day, Crufts Dog Show NEC, Solihull, England, UK, 2008.

Bryan and Cherry Alexander / Man running with his English Setter to show its paces, Gundog Day, Crufts 2008. NEC, Solihull, England, UK, 2008.

LYNN M. STONE / Portrait of male Golden Retriever standing in show stack pose, in garden, Illinois, USA

LYNN M. STONE / Portrait of male Golden Retriever, sitting in garden, with flower border, Batavia, Illinois, USA

LYNN M. STONE / Head portrait of Golden Retriever swimming, retrieving training bumper, Illinois, USA

LYNN M. STONE / Young Golden Retriever swimming with training bumper, Connecticut, USA

LYNN M. STONE / Head portrait of English Springer Spaniel sitting in grass by pond, Elkhorn, Wisconsin, USA

LYNN M. STONE / Portrait of English Springer Spaniel sitting in grass by pond, Elkhorn, Wisconsin, USA

Jason Smalley / English Setter hunting for grouse on Yorkshire moorland, panting in heat of summer, UK

Jason Smalley / English short-haired, smooth, pointer working on a grouse moor, pointing at quarry bird during a shoot, UK

Colin Seddon / Golden Retriever, swimming and carrying training dummy, UK

Colin Seddon / Golden Retriever swimming andcarrying training dummy, UK

Jane Burton / English Springer Spaniel pup 12-week, meeting 11-month baby boy in buggy

Jane Burton / Golden cocker spaniel, portrait of 10-month bitch

Jane Burton / Labrador x Golden Retriever sniffing squeaky Christmas ball

Jane Burton / English Springer spaniel dog giving paw and looking up

Jane Burton / English Springer Spaniel face portrait with feet up on wall

LYNN M. STONE / Brittany spaniel, domestic gundog {Canis familiaris} USA

LYNN M. STONE / Brittany spaniel, domestic gundog {Canis familiaris} USA

LYNN M. STONE / Brittany spaniel, domestic gundog {Canis familiaris} USA

LYNN M. STONE / Labrador retriever with shot pheasant {Canis familiaris} Illinois, USA

LYNN M. STONE / Brown / Chocolate Labrador retriever with duck in mouth - working dog retrieving USA

LYNN M. STONE / Brown / Chocolate Labrador retriever in wetland ready to retrieve USA

LYNN M. STONE / Two Labrador retriever dogs Golden and Black - breed colour variation