otros hijos de Hefesto

Is instrumental behaviour, or the ability to create and use tools, an achievement of humanity, or just of evolution? Did it appear with our ancestors, or already existed? Is there a non-human culture? This essay delves into these and other questions, trying to explain in a clear way and with multiple examples, concepts and topics that might be difficult to understand for the general public. This book will delve into animal behaviour and return to humans their intrinsic animal nature.