Dinosaur type critters thought to have lived about the same time the rocks were actually trees. Skeletons and fossils have been found in the Park.
At every place people could get out and hike or look at the Petrified Forest there were ravens begging for food. Big beautiful birds that we found out liked Cherieos. Don't know if we were supposed to feed the or not but everyone was. They nest along the cliffs. I don't remember seeing other birds except a hawk. We did see several lizards which are common here. The park is not good country to see lots of animals in. Too barren and not much to eat there.