Canis Major is one of Orion's hunting dogs. The brightest star in this constellation is Sirius, often called the Dog Star.
Orion's hunting dogs, Canis Major and Canis Minor have no relation to Boötes' Hounds, Canes Venatici. The sky is just filled with dogs... Notice that there are no constellations for the domesticated cat. Therefore, dogs are better than cats! (ha, ha) (See the note an Hydra about the pseudo-constellation Felis).
