This is the most instructive tie on the site, because two dogs arrive at an identical grooming score from opposite directions and the household consequences are nothing alike.
The Malamute's 4/5 is a shedding management job. Rated 5/5 and described as very heavy year-round, the coat needs an undercoat rake worked down to the skin two or three times a week, ten to fifteen minutes a session, rising sharply during the two annual coat blows when the wool comes away in sheets for a fortnight. All of it can be done at home with about forty dollars of equipment. The recurring cost is a vacuum cleaner, replaced more often than most households expect, and possibly a professional de-shed twice a year if you would rather not do the blows yourself. The coat must never be shaved.
The Goldendoodle's 4/5 is a matting prevention job, and it is the one people are unprepared for. A shedding rating of 1/5 does not mean the dog produces no dead hair — it means the dead hair stays in the coat instead of falling out. That hair twists into the live coat and forms a dense felted layer close to the skin, and it does so fastest in exactly the places that are hardest to see: behind the ears, in the armpits, along the collar line, at the base of the tail, between the back legs. Prevention is line-brushing, which means parting the coat and brushing from the skin outwards, section by section, most days. Not a brush over the top — that only tidies the surface while the pelt forms underneath.
On top of that sits a professional groom every six to eight weeks for a full body clip, feet, face and sanitary trim. In most regions that is one of the larger recurring costs of Goldendoodle ownership, and a coat that has already pelted cannot be brushed out humanely — the groomer will shave it short and the owner will not be happy. Coat type varies within the cross: a flat or wavy coat is manageable, a tight curly coat is a serious commitment, and the puppy coat that changes at around ten months is when many owners discover which one they bought.