He has been called many things from "a giant furry thing" to "a rabbit-like spirit". Basically, he is a spirit of the forest. Totoro is not a traditional Japanese character: he came completely from Miyazaki's imagination. However, he is obviously a mixture of several animals: tanukis (the Japanese version of raccoons), cats (the pointed ears and the facial expressions), and owls (the chevron markings on their chests and the "ooo"-ing sound they make with their ocarinas at night).