The Oak Forest section shrinks you by 24x to simulate the perspective of an ant. My first few times through, I thought that was its only purpose. If you look in front of the statues, there are hidden enclosures under simulated branches, rocks, and leaves that need to be lifted up in order to see the animals.
Every species has a larger statue.
1. Striped Wolf Spider
2. American Toad
3. Pill Bug (If I remember correctly ?)
4. Snail (Forget the species)
5. Red-backed Salamander
6. Ring-necked Snake