The German Pinscher is far larger: about 17 kg (37 lb) as an adult, against 5 kg (11 lb) for the Miniature Pinscher.
Temperament
They differ most on affection (German Pinscher: affectionate on its own terms; Miniature Pinscher: likes its own space) and on loyalty (German Pinscher: sticks close to its people; Miniature Pinscher: bonded to its family).
Alike
Both are rated the same on independence: decides for itself.
Neither is the better dog in general. Which suits you depends on your home, your days and the care you can give.
Breed explains only about 9% of how individual dogs differ in behaviour6. Meet the dog. A good breeder breeds for temperament as well as health, and matches each puppy's personality to the right home7,8.
Puppy growth
Reference curves · both sexes
Summary
Detail
The German Pinscher grows to the heavier adult, about 17 kg against the Miniature Pinscher's 5 kg.
Expected weight in kilograms, both sexes: each breed's adult weight grown along the 15–30 kg band of a WALTHAM growth standard9 and the under 6.5 kg band of a WALTHAM growth standard9.