behaviour and malting

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this is the first time i have owned a german shephard, her name is sheba and i love her to bits. my problem is she is quite destructive when left on her own, she constantly jumps up and grabs whatever is on the kitchen worktops and chews it to bits,how can this be resolved? also, although she is my dog, she listens more to my husband than she does me and when i take her for a walk she pulls me all over, i would like to take her everywhere i go but the pulling really hurts at times. as for the malting, i know that her bread do malt a lot and its not that that concerns me, but that she seems to be losing more on her back end, is this normal?