Hi Madison's Mom, as you can see I am also from San Diego. We have two Schnauzers both three years old and our pups are also somewhat aggressive. We tried taking them to the Dog Park in Palm Springs and let them loose in the small dog area and it didn't work for them, they act as a pack of two. Unfortunately we did not socialize them when they were puppies and I feel that is the problem right now.
However our Son and family also have two Schnauzers and they do get along with his two dogs and really have a good time with them, but that's about it. The don't like other dogs or children, and we have to be very careful when we take them out. Luckily we are retired and stay home a lot but when we travel they always go with us.
Just wanted to say Welcome to PetTalk and you do have a really beautiful pup there.
Jackie