Which constellation is named after the smaller dog?

The constellation named after the smaller dog is Canis Minor. The Latin name means “lesser dog” or “smaller dog,” distinguishing it from Canis Major, the Great Dog. In Greek and Roman traditions, the two constellations were often imagined as hunting dogs accompanying Orion, the famous giant constellation nearby.

Canis Minor is small and easy to identify because it contains Procyon, one of the brightest stars in the night sky. Procyon’s name comes from Greek and means “before the dog,” because it rises shortly before Sirius, the brightest star in Canis Major, at many northern-hemisphere locations. This apparent early rising helped give Procyon its traditional name.

The constellation is also linked with several different mythological dogs, including one associated with the hunter Orion and another connected with the Boeotian hero Icarius. These stories vary by source, so the constellation’s name is more consistent than any single myth. Canis Minor is not the same as Leo Minor: “minor” means smaller in each name, but the constellations represent different animals.