Due to the size of an adult Swissy a four to six foot high fence is recommended. Normal puppy play should be enough exercise for a young Swissy. As adults Swissies do need regular exercise but it can be as simple as a walk in the evening or a game of fetch in the backyard. The important thing is to make sure that they get enough exercise without overdoing it. Because they are still growing it is inadvisable to jog with your Swissy until it is mature.
All puppies chew.
They are usually quite content with a variety of safe chew toys like large Nylabones or Vermont Chewmen. Each dog is different but in general Swissies are not known as bad barkers. Swissies are quick to bark at anything new and different in their environment such as a car in the driveway or a delivery truck. They can also have a 'calling' bark where they will bark in order to get people to pay attention to them. Swissy puppies can take a long time to housetrain.