Wouldn't recommend for dog owners. Dogs are not allowed on a large portion of the trail which means you walk to a certain point and have to turn around and head back. Trail was overcrowded with families and children that did not have good dog manners. With all the other options for dog friendly trails in the area, I'd skip this one.
Winter walk unsatisfying with dead trees and hardly any animals out. Early summer has birds, beavers, turtles, etc. If you're looking for a peaceful and quiet walk, you may want to go early in the morning because there are lots of noisy kids and families.
I brought my son's cub scout troop here in late August and they loved it. The trail and boardwalk are wide enough for a large group and there's plenty to see. We must have seen 10 snapping turtles, dragonflies of every color, and the marsh mallows were is spectacular bloom. The boys were also happy to see beaver lodges and a great blue heron. The visitor center has a nice little museum and restrooms, which makes for a handy stop after the trip. Great intro site with creature comforts for the younger ones but plenty of wildlife to keep the older ones interested too.