Portuguese Water Dogs can make excellent house dogs for owners who can meet their specific needs. They are highly intelligent, loyal, and active, bonding closely with their family and usually getting along well with children and other pets. However, they can be reserved around strangers and have a strong retrieving instinct that may lead to tugging and chewing if bored. They require ample exercise, mental stimulation, consistent training, and early socialisation to prevent destructive behaviours and ensure they are well-adjusted.