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.
Water dog Water dogs are a type of gun dog bred to flush and retrieve game from water, often serving the waterfowl hunter. Strong swimming desire is a characteristic of these dogs. Some of the oldest dog breeds are water dogs. The term was originally water spaniels (a misnomer, as not all are spaniels). With the advent of kennel clubs many "water spaniels" were accepted under the names including the designation retriever rather than spaniel.