Sighthounds — Dogs

The story behind the answer

Sighthounds have a long, narrow (dolichocephalic) skull, deep chest, tight tuck-up, and long legs—an aerodynamic build made for speed. Their keen eyesight and streamlined heads help them spot and course game over open ground, unlike scenthounds that depend on a broader nose and long ears, or gundogs and herders with more moderate, all-purpose