The Daily Mirror reports Sheila and Ed Smith paid more than $5,000 to ship Joe, a 7-year-old Collie, to their daughter in Australia. The dog died from dehydration during a 24-hour flight from London to Sydney.
British Airways officials say they followed protocol and the dog was checked by a vet when the plane stopped in Bangkok. They say they transport around 13,500 pets a year.
The Royal Society for the Prevention of Cruelty to Animals is investigating the animal cruelty allegations.