This is akin to being an only child I feel @dwixer. Just look at the change in the puppy when he received a playmate he could connect with. I've heard the same thing about other animal breeds. For instance, a horse needs a companion to ward off the loneliness. I've read that they need companionship so owners pair them with a goat, donkey, or another horse.
I was happy to read that the owner noticed the puppy's discontent and sought help from a professional.
Thanks for sharing. An enjoyable read with a concrete solution. Take care.
!LADY
RE: Mabel's puppy