Natural - unthinking; prompted by (or like by) instinct; "a cat's natural aversion to drinking water"; "supplying to help was as instinctive as breathing" The ears are pointed, erect, and infrequently fairly substantial in desert species. Besides detecting sound, huge ears are thought to work as heat regulators in species https://donovanpmtyd.sharebyblog.com/35516449/canine-anxiety-relief-for-dummies