This is Normal puppy behavior. She is a baby. The best thing is more play (which is what all this behavior is) and to divert her attention to toys.
So you need to stop thinking "how do J stop her from doing <insert behavior you don't like>" and start thinking "how do I teach her to do the behavior I want?"
The behavior you are describing is the puppy asking you to play. Boxers have a lot of energy and are smart. You need to fulfill her energy needs with play that helps her learn what you need. You also need to fulfill her mental needs with mentally stimulating games. This is often the same thing.
These games lead to a well trained dog.
I would be sure your other dog has time with you separate from the puppy and a place to go where there is no puppy. You also need to spend as much time as you can with the puppy without the older dog so the puppy bonds to you and not to your other dog.
Take a look at the book "How to Raise a Puppy You can Live With" How to Raise a Puppy You Can Live with: Rutherford, Clarice, Neil, David H: 9781617812446: Amazon.com: Books
I am sure others will jump on with other ideas and video links.
So you need to stop thinking "how do J stop her from doing <insert behavior you don't like>" and start thinking "how do I teach her to do the behavior I want?"
The behavior you are describing is the puppy asking you to play. Boxers have a lot of energy and are smart. You need to fulfill her energy needs with play that helps her learn what you need. You also need to fulfill her mental needs with mentally stimulating games. This is often the same thing.
These games lead to a well trained dog.
I would be sure your other dog has time with you separate from the puppy and a place to go where there is no puppy. You also need to spend as much time as you can with the puppy without the older dog so the puppy bonds to you and not to your other dog.
Take a look at the book "How to Raise a Puppy You can Live With" How to Raise a Puppy You Can Live with: Rutherford, Clarice, Neil, David H: 9781617812446: Amazon.com: Books
I am sure others will jump on with other ideas and video links.