Animals Wearing A Hat

• Biretta - A square cap with three or four ridges or peaks worn by Roman Catholic clergy and some Anglican and Lutheran clergy.
• Boater - Flat-brimmed and flat-topped straw hat, formerly worn by seamen, and now mostly at summer regattas or garden parties, often with a ribbon in club or college colors.
• Boonie hat - A soft cotton wide-brim hat commonly used by militaries. Similar to a bucket hat.
• Boss of the plains - A lightweight all-weather hat designed by John B. Stetson for the demands of the American west.