Weight, Height & Life Expectancy Most Miniature Schnauzers are around 30-36 cm in height, and usually weigh in at around 6.5 kg. You can look forward to enjoying time with special friend for approximately 14 years. Personality Miniature Schnauzers have animated, affectionate and obedient personalities.. They require lots of love and attention in order to thrive. They are typically good with children and other dogs too. Miniature Schnauzers are quite alert and have a mind of their own, but they are also obedient and quite eager to please. Grooming and Exercise Miniature Schnauzers shed very little, but their coat still requires daily brushing. In order to retain their distinctive look, they should have professional grooming every 3 months. As Miniature Schnauzers are active in nature, they thrive both physically and mentally when they get enough exercise. If you live in an apartment, make sure you provide ample time for your Miniature ...