The Raven and the Frog
In Native American culture the Raven was called upon in ritual so that visions could be clarified. Native holy men understood that what the physical eye sees, is not necessarily the truth, and he would call upon the Raven for clarity in these matters. The Raven is also the keeper of secrets.
Due to the fascinating transitions the Frog goes through in its life, it is a symbol of metamorphosis. Furthermore, the Frog’s dual time spent on land and water represents duality of the soul.
-Info from symbolic-meanings .com
The fox is thought by many ancient cultures to be a messenger between our world and spirit world.