Volume 4 of 4 portrays Professor Frisky von Onion Bagel, S.D. (Super Doggy) in what we feel is the most important of the volumes, as it would apply to the overall Emotional Literacy system we've developed. Keeping in mind that our audience are preschool children (3-5 yo's), and almost always in a preschool setting (anywhere) these four books help to make significant strides in urging children to express and understand their emotions, as well as appropriately manage them, even at the young age of 3-5 years.