It's an event which tests the agility of the dogs and sometimes the patience of their owners.
Thousands of canines from all over the world are competing in the Kennel Club International Agility Festival held in the grounds of Rockingham Castle near Corby in Northamptonshire.
With boundless enthusiasm, great agility, glossy hair and shiny noses, more than 3,000 dogs are taking part.
- Click to watch a report by ITV News Anglia's Stuart Leithes
The festival is now in its 13th year and has a record-breaking entry of 3,170 hounds from countries as far away as China and the United States of America.
With the additional dogs competing this year, two extra rings will be added to the previous 16 in order to hold over 200 separate classes, which will feature dogs of all agility grades and sizes.
70 judges from all over the world will be attending over the four days, marking everyone from top agility competitors to novice handlers and their dogs.
The Kennel Club International Agility Festival runs until to Sunday 13 August.