The moose often come to the ponds to feed on potassium rich aquatic plants in the early evening. A couple of good ponds to check out would be Big Lyford Pond, Moosehead Lake. If you're staying in the Rockwood area then you could throw a canoe into the large deadwaters on the West Outlet. Several of these are roadside and have large areas of aquatic plants. It's getting a little tougher to see bears in the area since many of the open dumps have been closed down.
Bears often hang out at the dumps to get a free meal.
The dump in Kokadjo still has bears visiting. The best chance to see them is after dark. These bears look freindly and passive when viewed from the inside of a vehicle, but you should remain in the car and do not feed or agitate the bears. Also, if you're tenting out remember to put your coolers and other food in the vehicle or in a safe place before going to bed. Bears have a keen sense of smell and will not hesitate to give you a wake up call in the middle of the night if they think they can get a snack.