Are both Jack Russell Terrier and Bullmastiff types of dogs?
Bullmastiff The Bullmastiff is a large-sized breed of domestic dog, with a solid build and a short muzzle. The Bullmastiff shares the characteristics of molosser dogs, and was originally developed by 19th-century gamekeepers to guard estates. The breed's bloodlines are drawn from the English Mastiff and the extinct Old English Bulldog. It was recognized as a purebred dog by the English Kennel Club in 1924. They are quiet dogs and very rarely bark.
Eurasier The Eurasier, or "Eurasian dog", is a breed of dog of spitz type that originated in Germany. It is widely known as a wonderful companion that maintains its own personality, has a dignified reserve to strangers, a strong bond to its family and that is relatively easy to train.