20+ Horned Animals: What Counts as a “Horn,” How They Differ from Antlers, and Flagship Species (wit

Many animals carry horn- or horn-like structures on the head. Some are weapons for defense or intraspecific combat, others help with display or even heat regulation. Shapes range from slim needles to sweeping scimitars or tight spirals. Below you’ll find what a true horn is (and isn’t), how it dif...