They have a dished profile, meaning their forehead is slightly concave and their nose is slightly convex, creating a distinct, almost "Roman-nosed" appearance. This unique head structure, along with other physical traits like their high-set tail and their large, expressive eyes, gives Arabian horses a very elegant and striking look.
This distinct head shape is not just aesthetically pleasing; it's also functional. It's believed to have evolved to help the Arabian horse navigate the harsh desert environment, providing better airflow and allowing them to breathe easily even in hot, dusty conditions.