German Sheaperd trouble

Question
Hello,
I bought a new German Sheaperd puppy a couple mouths ago. she's in that rebelion, acting up, crazy stage I also have 2 other chiuhauhau's. Whenever I let  my sheaperd in the house  its chaos smashing the 2 other dogs against the wall and wacking them with her paws or when all 3 of them are in the same room When the female chiuhauhau and the sheaperd are nearly a foot or 2 near each other it turns into a growl fest then a war battle but the male chiuhauhau isnt as bad. One more thing the sheaperd starts barking around 700pm  and wont stop I think shes barking at the dog in the next yard.
please help me, thank you,
michelle

Answer
It sounds like your puppy could really use a good class that focuses on solid obedience skills and self control. The more you work with her, the less explosive energy you will see. Especially helpful would be clicker classes, which make her think. Thinking dogs are calmer than dogs who don't know how to think and solve problems. But the best way to accomplish that is with a good in-person trainer. It can be daunting to try to train on your own. I would also caution that until your Shepherd pup has some better skills, you may be risking the little dogs by allowing this sort of interaction. Best luck. Sandy Case BFA MEd CPDT www.positivelycanine.com