The constellation pictured is known as Canis Major. It has been said that Canis Major follows closely behind Orion. This constellation is located in the second quadrant of the southern hemisphere. The brightest star in Canis Major is known as Sirius, which is also the brightest star in the sky. This constellation is approximately 8.6 light years away. Sirius is also called the "dog star." Sirius is actually a double star. This is also as massive and hotter than the sun itself. Canis Major's second brightest star is known as Adhara. One interesting thing about Canis Major is that there is a star cluster known as M41. There is a total of seven stars within Canis Major. The Canis Major Dwarf Galaxy is an irregular galaxy, roughly elliptical in shape, that is believed to be the nearest neighboring galaxy in the solar system.  This constellation also contains a lot of red giants. These were first discovered in 2003.

http://www.constellation-guide.com/constellation-list/canis-major-constellation/