There are many brachycephalic dog breeds, meaning that these breeds have a short nose and flat face. These dog breeds include the Affenpinscher, American Bulldog, Boxer, Boston Terrier, Bulldog, Bullmastiff, Cane Corso, Chihuahua (apple-headed), Chow Chow, Dogue de Bordeaux, English Mastiff, French Bulldog, Griffon Bruxellois, Japanese Chin, Lhasa Apso, Pekingese, Pug, Rottweiler, and the Shih Tzu. Mixes of these breeds are also often brachycephalic. Such mixes include the Chug (Chihuahua and Pug) and the Bulloxer (Bulldog and Boxer). Not all mixes from brachycephalic breeds are brachycephalic, however, which can be seen in mixes like the Jack Chi (Jack Russel and Chihuahua) or the Chiweenie (Chihuahua and Dachshund).