#4 Adult dogs are incredibly smart and practical.
You can even say that they have an analytical mind and have their own opinion on any issue. Commands that seem meaningless to them, they can simply ignore or execute in their own way. But in order to rush to help the drowning man, this dog does not need a command at all - it will selflessly throw itself into the water in any case. Clearly and confidently Newfoundlands act in dangerous situations, for this, they also do not need special instructions. Actually, the innate quick wit and the ability to independently and quickly make the right decision under the current circumstances is a distinctive feature of the outstanding intelligence of these animals.
#5 Newfoundlands are well versed in the intonation of the human voice and can easily determine what mood the owner is in.
They understand when they need to be supported by being around, or are removed from sight. Very polite by nature, Newfoundlands are very sensitive to being rude towards themselves. The dog, like a person, takes offense when they shout at him, and after a quarrel for a while he withdraws into himself, refusing to communicate with the offender.
#6 Newfoundlands are not the best watchmen, since all people are initially friendly and open to communication.
One should not expect an instant aggressive reaction to a stranger from them, since these dogs are not inclined to harsh and thoughtless actions, and they need some time to analyze the situation. Sensing danger, they first warn the enemy with a formidable bark, and then fiercely attack him with all their remarkable power.