The organisers of the Crufts international dog show have denied rumours that other dogs have been poisoned at the event.
A three-year-old Irish setter called Jagger died after competing Crufts amid fears he may have been poisoned.
One of the owners of the prize-winning dog said they have lost "our love, family member and best friend to our son".
A vet has told ITV News it is "very difficult" to determine whether or not a dog has been poisoned.
Zara Boland said performing a post-mortem on the animal will give "an indication" but that is still "very difficult" to tell.
"You are relying on the naked eye," Boland said. "Unless it is something very obvious like a blue slug pellet ... that hasn't yet been digested then it's very, very difficult."
Toxicology panels are the only way to determine what went on, she added.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.