Mark Taylor / Yellow Labrador Retriever puppy, 7 weeks, in a metal dog bowl.

Jane Burton / English Springer Spaniel pup, 7 weeks old, has been drinking water from bowl

Jane Burton / Boxer bitch pup, 11 weeks old, eating dry food

Jane Burton / Sable Border Collie looking up, hoping for more food

Jane Burton / Two Dalmation pups, 7 weeks old, eating from blue/yellow bowls

Jane Burton / Boxer bitch pup, 11 weeks old, eating from a stainless steel dish

Jane Burton / Border Collie x (Terrier x Shih-Tzu) bitch showing food guarding behaviour

Jane Burton / Gold Saluki Lurcher (Canis familiaris) dog lying in his kennel

Jane Burton / Different types of dog food: tinned, complete dry food, tinned, biscuits and chews

Jane Burton / Four Dalmatian pups standing in a line and eating from multicolured bowls

Jane Burton / Border Collie puppy sitting in a food bowl.

Petra Wegner / Four Cavalier King Charles Spaniels, one puppy and a Mixed Breed Dog eating from feeding bowls