Consciousness, many have argued, is what separates humans from other animals. Consciousness refers to our awareness of our own mental processes, such as our thoughts, feelings, and sensations. It is possible that we are the only beings on this planet that have this type of self awareness or level of consciousness and the ability to introspect, or look inward and examine these processes. For example, if you are angry, you can try to understand your anger, why you are angry, what that anger feels like, etc. But can a cat?