I just got a Miniature Schnauzer on Saturday and when I first met him he greeted me with a growl, but has not acted like that with us again. So, I took him to my son's school today b/c my son is the star student this week and wanted to show off his new pup. Well, needless to say he greeted everyone by growling, barking and even snapping. The kids were just sitting quitely in a circle to meet Gus and he scared them. He is only 15 weeks old, is there hope for him or should we contact the seller and try to give him back?