In my book, "Know Thyself: A Kid's Guide to the Archetypes," I recommend that children watch or play with animals in order to become more aware of the Innocent Archetype -- the naturally curious part of our identity. Research into how animals affect our mental health is just in its infancy, but so far there are some compelling studies to suggest that animals can contribute to mental health on a number of levels and across a wide span of ages and mental health problems.