Baby back ribs (a.k.a. back ribs, a.k.a. baby backs, a.k.a. loin back ribs, a.k.a. loin ribs, a.k.a. Canadian back ribs). Baby backs do not come from baby pigs! They are called "babies" because they are shorter than spare ribs. Back ribs are attached to the spine on one end and to the spare ribs on the other. They contain 8-14 bones per slab, and are less fatty than spares. A typical full slab has 11-13 bones. The slab is tapered at one end, with the shortest bones only about 3" and the longest about 6". Because they weigh less than spare ribs, they cook faster. They are usually curved like a hockey stick at the end where they meet the spine, (called the chine side). Depending on how the butcher removes the loin meat that is on the convex side of the baby backs, some can have up to 1/2" of delicate, lean loin meat on the top. Most hungry adults can eat a whole slab of baby backs. Typically $4-8 per pound, and usually about 1.5 to 2 pounds per slab. A single serving is usually half a slab for a lightweight, and a full slab for a hungry person.