Puppy is tiny and physically unable to create total mayhem, but he's still a dog and I'm still wary. Ds (7) loves to play with the puppy and train him to perform simple tricks such as sit, but is also inclined to stick his face in the puppy's face, which strikes me as unwise.
This evening ds and I were on the sofa when puppy took a running jump, landed on the sofa and growled at ds. It was a playful growl, but even so, I don't want that dynamic. Ds and I evicted pup from sofa for that.
I think ds views pup as part human and pup sees ds as part litter mate. I'd like to help them both to sort this out and I'd like to start with ds learning about safe behaviour around dogs. He knows not to bother the dog in bed, ever, and is very good about that. He's generally an attentive and eager to please child, but, 'Don't stick your face in the dog's face, he has teeth!' is proving unusually hard to learn.