This article describes stduies about animal cognition, through it several behaviors and moral distintions between animal cognition in general and human cognition are showed. So, this document includes ideas about some theories, methods, and concepts related with this topic: rationality, belifs, concpets, structure and processes of mind, emphaty, emotions, morality, behaviorism, knowledge, etc. The study of animal cognition is near to pholosophical thought or questions, and helps us to understand the human rationality and as a consequence humans' morality.