My puppy is very small and I am afraid she will get hurt by the bigger puppies.

We are small dog owners too, so we understand  your  reservations concerning big dogs. Carefully exposing your tiny pup to larger dogs is a fundamental part of training. For safety reasons, your little guy needs to learn how to act around the bigger guys. For example, if you run ... you WILL get chased!  Let's face it, it's a big dog world out there, and a big dog encounter is eventually going to happen. We will guide you throughout this delicate but oh so important process. We've done it zillions of times with great success!