I prefer leg quarters and backs. They need bones as well. Bone in chicken is cheaper in my area. I can get 2lbs of chicken backs for less than $1/lbs, and quarters are about $1.50, while boneless breasts are $2. My dogs also enjoy drumsticks.
The only once in a blue moon time they will ever get it is when I have forgotten the meat in my fridge and I don't trust it for our own use. But then I will give them a turkey neck as well for the bony part.