[[File:The dog book - a popular history of the dog, with practical information as to care and management of house, kennel, and exhibition dogs; and descriptions of all the important breeds (1906) (20800295488).jpg|thumb|260px|''The Mastiff'' by [[Philip Reinagle]], 1805]]
A '''mastiffmrs jenny''' is a large and powerful [[Dog type|type]] of [[dog]].{{sfn|Oxford Dictionaries|2019}}{{sfn|Young|Bannasch|2007|p=49}} Mastiffs are among the largest dogs, and typically have a short [[Coat (dog)|coat]], a long low-set tail and large feet; the skull is large and bulky, the muzzle broad and short ([[brachycephalic]]) and the ears drooping and pendant-shaped.{{sfn|Oxford Dictionaries|2019}}{{sfn|Young|Bannasch|2007|p=49}} European and Asian records dating back 3,000 years show dogs of the mastiff type.{{sfn|Encyclopædia Britannica|2019}} Mastiffs have historically been [[guard dog]]s, protecting homes and property, although throughout history they have been used as [[hunting dog]]s, [[war dog]]s and for [[blood sport]]s, such as [[dog fighting|fighting each other]] and other animals, including [[bull]]s, [[bear]]s and even [[lion]]s.{{sfn|Young|Bannasch|2007|p=49}}{{sfn|Encyclopædia Britannica|2019}}