Miniature Schnauzers can make great pets. They are generally friendly, pretty smart, and love to play. They are also active dogs, so when you get yours, you need to make sure that you taking them for walks daily and that you are doing things that will engage their intelligence. A bored Schnauzer isn't necessarily a good thing, so keeping them engaged is good. Before you can do any of that, you need to actually own one of these dogs. The best way to get a healthy and happy mini Schnauzer is to visit a reputable breeder. When you do that, you need to look at some things so that you know that you are getting the right animal for you.
Parents' Genetic History
A reputable breeder should have copies of the parents' medical history, at the very least, and preferably their genetic history. The reason for this is that there are some genetic and congenital issues that Schnauzers have, and breeding two dogs that have a history or disposition of those things makes it more likely that their offspring will have issues as well. So, ask to see those records. If you don't understand something on them, ask the breeder to explain. They should have no problem with doing that for you.
Puppies' Vet Records
You also want to ask if you can see the vet records of the puppies. Depending on their age, they should have their first vaccines and should've been checked for worms. Even if they haven't had their first shots yet, the puppies should have gone into the vet for a wellness check, just to make sure that they are healthy and growing the way that they should be. The breeder you are dealing with should have no problem showing you the records proving that the pups have visited the vet and showing what was done for them.
The Parents' Overall Health
You should also ask to see the parents if they are on site. You might only get to meet one (generally the mother) since the puppies will have to stay with her, but meeting one parent is going to be better than nothing. You want to look to see how healthy and friendly the mother is, as well as how she cares for the puppies.
Getting a miniature Schnauzer can be a great idea. They can make good companions and can be very friendly. If you're ready to adopt, contact local breeders who have miniature Schnauzers for sale and keep this information in mind before you make your final decision.