 The tiger, deer, and monkeys are all conscious creations by Dr. Morbius as companions ("pets") for his daughter and only outwardly resemble their Earth counterparts.The novel also differs somewhat from the film in that it does not directly establish the great machine as the progenitor of the animals or monster; instead only attributes them to Morbius' elevated mental power.The Krell's self-destruction can be interpreted by the reader as a cosmic punishment for misappropriating the life-creating power of God.