I saw this story online and I just couldn't bring myself to read it. I thought the worst!!

Only because you wrote HAPPY ENDING on your post could I read it.

Kids move FAST! You cannot let them out of your sight for even a few seconds.

That puppy should be with its Mom and not being handled by the
younger children - or taken outside to get muddy and need a bath.

Parenting Class #101 is badly needed.