Hi
My newf??? Are you refering to the Newfoundland breed?? I dont have a nefoundland puppy lol, i just said large breed :-)
Anyway lol my puppy is 4 months old and we do not allow puppy to free run, this problem started at about 12wks of age, and since noticing we have limited exercise to going in the yard for a "pee-pee" and back indoors again.
xx