He is a puppy! The first six months to 1 year are the toughest, just like children. If you will bear with him a little longer, you will see a change in his behavior. He needs more of your attention. Always remember a dog will not poop where he sleeps. So if he lives in a cage, where will he poop? Everywhere but the cage.
This puppy was born on July 20th. That makes him a mere 12 week (3 months) old today. The truth of the matter is that puppies chew. And puppies take a while to housebreak, and while you are housebreaking them you MUST keep them on a very strict schedule to regulate their bowel movements and the times they need to urinate. The stricter the schedule you keep them on, the faster they learn because they come to know what is expected of them.
How old was the puppy when you got him? How old are your kids? Are they young children, say, under the age of 10? When it comes to training a puppy, EVERYONE in the house must cooperate with the training, this is why I never recommend getting a puppy to a family who has very young children. The kids are not able, at that age, to participate in the training and dominant breeds (and rottweilers and huskies are BOTH dominant breeds) will come to see the kids as their underlings and will treat them as such. If you are lucky, the puppy will see the kids as his equal and will play with them the same way he would play with his littermates, which would include nipping and chasing and wrestling.
I will reserve further comment until you post back with the information on your kids and the puppy that I asked about because that will determine what the next course of action should be.
Ghilly