Thank you everyone for your replies

.
It must have been harder for the couple who had the puppy, they said they had grown attached to the puppy

. Holly was one of 5 puppies born to there own cherished dog. I saw the mother and the aunt when i visited and they were very happy dogs.
She said Holly died of an infection and the vet said they had done everything they could have and that it was one of those things that sometimes happens.
She said the other puppies are fine.