Mark Raycroft / Boston Terrier (Canis familiaris) jumping

Ernie Janes,Ernie Janes / Yellow Labrador jumping breakwater, Norfolk. April

LYNN M. STONE / Domestic dog, two Doberman Pinchers jumping over agility course hurdle, Rockford, Illinois, USA

Mark Raycroft / Jack Russell or Parson Terrier (Canis familiaris) adult jumping through agility tire

TJ Rich / Terrier mix rescue dog, leaping in garden, Cotswolds, UK

TJ Rich / Terrier mix rescue dog, leaping in garden, Cotswolds, UK

Mark Raycroft / French Bulldog (Canis familiaris) puppy in agility tunnel, North America

Mark Raycroft / Miniature Smooth Dachshund (Canis familiaris) jumping over agility course hurdle

Mark Raycroft / Miniature Smooth Dachshund (Canis familiaris) jumping over agility agility course hurdle

Mark Raycroft / Boston Terrier (Canis familiaris) jumping

Mark Raycroft / Jack Russell Terrier (Canis familiaris) jumping through hoop in dog agility course

Mark Raycroft / English Bulldog (Canis familiaris) jumping in dog agility course