The sternum is the breastbone - the flat bone in the center of your chest that connects to your ribs via cartilage and forms the front of your rib cage

With teeth like this

these measure ~1

having diverged from their common ancestor with gray wolves ~6 million years ago

Eastern Timber Wolf Skull animals The sternum is the breastboneThese are real Eastern Timber Wolf (Canis lycaon) skulls! These wolves are indigenous to the north eastern area of the Great Lakes Region and feed primarily on white tailed deer. These ~9" long skulls cannot be shipped outside of Canada. *It appears the previous owner has coated these skulls Inn some sort of white varnish. We have discounted the skulls accordingly*