An entity was observed looking into my living room window. The window is in the back of my house. I saw the entity looking into my living room window. It ran away when I turned the light on and went outside. The entity moved/ran very quickly and disappeared in the darkness as it ran away from me. The entity was approximately 4 & a half feet tall. There was no communication between the entity and myself. There were no UFO's observed with the sighting of the entity. The entity wore a dark/black one piece suit that did not reflect any light. The duration of the event was very short. Approx 1-2 minutes.