I did this loop with my dogs, while my wife and little boy were out of town, so I could check to see if it is "baby-friendly". It's not! Probably ten or twelve would be the minimum age for this trail. It is a very nice hike, nonetheless.
I had read the trail description, and so knew about the numerous stream crossings on the first leg, but I thought maybe I could just rock-hop to stay dry. This plan held up through the first two or three crossings, but took a lot of time. Eventually I got to a crossing where I had no choice but to just walk through. So, while you should expect to have wet feet on this hike, the water is only about knee-deep.
I was really impressed with how well marked the trail was with closely spaced yellow blazes, which is good, because in many places the trail is very difficult to discern. But here's my warning: When you get to the spot designated on the trail guide as mile 5.5 "Turn right (downhill) onto the Devil's Fork Loop Trail", the blazes continue uphill. I walked uphill about two miles (I had left both the map and my GPS at home - yeah, I know) before I convinced myself that I had missed a turn. When I finally got back to the place where I should have turned, I realized that there is a post in the ground, that looks like it used to hold a directional sign, but from which that sign has apparently been wrenched off.
So, if you forget your GPS and/or map, look for the naked signpost at mile 5.5, and turn right!!
Wildlife we saw included two quail, three pheasants, and one skunk (luckily I saw the skunk before my dogs did!).