Canine herpesvirus causes devastating neonatal mortality in puppy litters, with welfare implications for both pups and breeding bitches.
Neonatal puppies dying from herpesvirus infection experience acute deterioration and death, while surviving littermates and the bitch suffer from the loss. The disease is preventable through appropriate temperature management and vaccination where available. Responsible breeders should understand and address herpesvirus risk as part of neonatal welfare planning.