Hey everyone, I am a new Doberman puppy owner and I am having a bit of trouble with my pup. He is only 5 months old and whenever he gets excited, he becomes completely out-of-control. He starts jumping, biting, and running around like crazy. I know that it's normal puppy behavior, but it's getting difficult to handle him. I have tried training him but it doesn't seem to be helping. Can someone please suggest some effective ways to calm down an out-of-control Doberman puppy? I would really appreciate any advice or tips from experienced Doberman owners. Thanks in advance!