A Sutton woman whose dog won a place in Crufts this year has rubbished claims the death of two dogs were a deliberate attack.
Reports emerged after the Irish setter Jagger died on its journey back to Belgium after the Birmingham show at the weekend.
Its owners say it died after eating beef-laced with poison at the show.
Reports have also emerged of a second dog dying since the competition.
Naomi Pearce, and her team from Mansfield Marnicks took third and fifth place in the flyball category - but did not suspect anything suspicious while participating in the event.
She said: “We couldn’t believe it when we heard the news that night. It was shocking. We heard the owners had said the dog had eaten poisoned beef, but I don’t think anyone would go to the show to kill a dog.
“It is possible the dog ate the meat before arriving at the show. I just don’t think anyone would do that and be so malicious.”
The 26-year-old of Mapplewells Crescent, has taken part in the show for the past 18 years.
“There has never been anything like this before. We didn’t notice anything unusual. There were people saying it had been done so there would be less competition, but it just doesn’t make sense to me.
“I can’t see how someone there could do that. People are dog lovers. I’ve never seen anyone there who is nasty or mistreating the dogs.”
Co-owner of the show, Jeremy Bott, said he did not think the dog was targeted, but the culprit may have been acting on ‘a grudge against dogs or the Crufts show’.
It has been claimed after the dog’s autopsy poison has been ‘stitched’ into cubes of meat - possible slug or rat poison.
Investigations are ongoing into the cause of death for the second dog.