Chocolate Blueberry Cake

I don't have a picture, although when I made this it wouldn't have won anything for it's looks anyway, but it tasted GREAT!

1 Devils chocolate cake mix and all ingredients on box
1 small chocolate pudding mix
1 blueberry yogurt (individual size)
chocolate chips (milk or semi)

Mix cake according to directions. Add the pudding mix, yogurt, and as many chocolate chips as desired. Bake according to package directions. The pudding may add some cooking time; check with a toothpick. The toothpick should come out mostly clean when done. This cake does tend to pull away from the edges of the pan when done. Top with frosting or whipped cream and fresh fruits!