At first , police said dog went missing when the worker went outside . Originally the worker said he let the dog out to go to the bathroom and the dog went missing , Sexton said . Vet that cared for the dog says it died of heatstroke . The worker has been fired , veterinarian John Smith said . Louisiana Tech said dog was a ` ` symbol of the spirit '' of the school .
At first , police said dog went missing when the worker went outside . Vet that cared for the dog says it died of heatstroke . The worker has been fired , veterinarian John Smith said . Louisiana Tech said dog was a ` ` symbol of the spirit '' of the school .