The Great Dog: Canis Major
Orion doesn’t go hunting without his two loyal hunting dogs. Sirius is sometimes known at the “Dog Star”, because it’s the brightest star in Canis Major, the “Great Dog” constellation.
Follow Orion’s belt to Sirius, then go just a bit farther and you should see a triangle of stars that form the dog’s body: Aludra on the left, Wezen in the middle, Adhara on the right. Farther up and off to the right is the dog’s head, Mirzam.
The Winter Triangle
The Lesser Dog: Canis Minor
Procyon is the brightest star in the constellation Canis Minor (the “Lesser Dog”), and the the eighth brightest star in the night sky, as it’s only 11 light-years from Earth. If you can find it, then you’ve found Orion’s other dog.
Canis Minor is one of the simplest constellations – it’s only got two main stars! (So, yes, you’ll have to be creative if you want to see a dog in that.) The other star is Gomeisa.