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An adult dog and wolf of the same weight will have different-sized heads.Yes. A dog of the same weight as a wolf will have a head that is 20 percent smaller. This is a result of several factors that occurred during domestication of the animal. Dog heads vary from wolf heads in several other ways as well—they feature smaller teeth, more rounded and forward-looking eyes, and a more curved lower jaw.(back to questions) What's in a Howl | Ed Bangs | Wolf-Dog Connection Resources | Guide | Transcript | Wolves Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated November 2000 |