FRAGMENT FROM NATURE contemplates the question of how animals differ from plants. This may seem like a quaint and perhaps academic question, but it is far from the case. Imagine a creature that continues to form body parts throughout its life, in a quasi pluripotent state, forever capable of regeneration of an adult from a fragment of tissue. This creature can morph its anatomy and physiology according to the conditions. And the delineation of an individual in this creature is essentially a group of cells, not the organism. Read on.