German Shepherds and spaniels from around the country are competing in national trials in South Yorkshire – in the hope of being crowned top dog.
The annual trials, which are free of charge for spectators, started on Thursday and end today.
Agility, obedience, tracking and search skills are among those assessed.
A group of 21 dogs and handlers are involved in the trials after qualifying at regional events.
Sheffield dog handler PC John Shaw, with six-year-old German Shepherd, Diesel, and Barnsley dog handler PC Neil Losada, with three-year-old Ace, a Belgian Malinois, are among those taking part in the national police dog assessment event.