what is the size of a tibetan mastiff
Tibetan Mastiff Males can reach heights up to 83 cm (33 in). The original Tibetan mastiff breed from its native range usually weighed 55–90 kg (121–198 lb). The enormous dogs being produced in some Western and Chinese kennels, which sometimes weigh in excess of 115 kg (254 lb) would have cost too much to keep fed to have been useful to nomads; and their questionable structure would have made them less useful as livestock or property guardians.
Bull Terrier The Bull Terrier is a breed of dog in the terrier family. There is also a miniature version of this breed which is officially known as the Miniature Bull Terrier.
American Bulldog The American Bulldog is a breed of utility dog. There are two specific types of American Bulldog, Standard and Classic; additionally, there are also mixes of the two types.
Pit bull The term pit bull is often used loosely to describe dogs with similar physical characteristics, and the morphological (physical) variation amongst "bully breed" dogs makes it difficult for anyone, even experts, to visually identify them as distinct from "non-pit bulls".[7][8][9] While mixed breed dogs are often labeled as "pit bulls" if they have certain physical characteristics such as a square shaped head or bulky body type,[10] visual identification of mixed breed dogs is not recommended by the scholarly community.[7]