Miniature Schnauzers normally have a small, squarely proportioned build, measuring 12 to 14 inches (30 to 36 cm) tall and weighing 11 to 15 pounds (5.0 to 6.8 kg) for females and 14 to 18 pounds (6.4 to 8.2 kg) for males.
The Official Standard of the Miniature Schnauzer describes temperament as "alert and spirited, yet obedient to command. Friendly, intelligent and willing to please. They should never be overaggressive or timid." Usually easy to train, they tend to be excellent watchdogs, with a good territorial instinct, but more inclined toward vocal notification than attack. They are often guarded towards strangers until the owners of the home welcome the guest, upon which they are typically very friendly to them; unlike some of their terrier cousins, they are not typically aggressive. However, they will express themselves vocally, and may bark to greet their owner, or to express joy, excitement, or displeasure. In German, the verb schnauzen means to snap vocally (as in repartee,) or to give lip to something, or to talk back.
Proper socialization with other dogs and people is important. The breed is generally good with children, but as with any dog, play with small children should be supervised. They are highly playful dogs, and if not given the outlet required for their energy they can become bored and invent their own "fun." Schnauzers have a "high prey drive" (appropriate for a ratting dog), which means they may attack other small pets such as birds, snakes, and rodents. Many will also attack cats, but this may be curbed with training, or if the dog is raised with cats
While generally a healthy breed, Miniature Schnauzers may suffer health problems associated with high fat levels. Such problems include hyperlipidemia, which may increase the possibility of pancreatitis, though either may form independently. Other issues which may affect this breed are diabetes, bladder stones and eye problems. Feeding the dog low- or non-fatty and unsweetened foods may help avoid these problems. Miniature Schnauzers are also prone to comedone syndrome, a condition that produces pus filled bumps, usually on their backs, which can be treated with a variety of protocols. Miniature Schnauzers should have their ears dried after swimming due to a risk of infection, especially those with uncropped ears; ear examinations should be part of the regular annual check up.
