1 A living creature; an animal. Example sentences. 1  Even in my newly adopted home in Florida, I am still bewildered to see critters outside Animal Kingdom. 2  The sounds of the desert animals-critters, as they call them here on the ranch-come at me from all directions. Even in my newly adopted home in Florida, I am still bewildered to see critters outside Animal Kingdom. 2  The sounds of the desert animals-critters, as they call them here on the ranch-come at me from all directions.