The Dogs Unleashed event is taking place in Bakewell Showground in Derbyshire this weekend.
It has been running for five years. The organisers say it normally attracts around 5,000 people over the two days.
The event informs the public and dog owners about issues that are regularly seen in the news, such as responsible dog ownership, relationships between children and dogs.
People will also be taught how to deal with the aggression of dogs and shown ways to socialise dogs and improve their health.
There will be microchipping, free health checks and behavioural advice at the event, which will also educate the public about working dogs - the local fire service and search and rescue dogs will be involved in this.
David Hutchinson from Derbyshire Fire & Rescue service says the blaze which partially destroyed the sports hall at the St Anselm's Prep school in Bakewell, most likely started in the bolier room, and the fire is not being treated as suspicious.