Which dog is a good house sitter?

Dogs suitable for house-sitting include: Bullmastiff, Doberman Pinscher, Norfolk Terrier, German Shepherd, Rottweiler, Chinese Field Dog, etc. Firstly, the Bullmastiff: alert and aggressive, bred specifically to deal with poachers. Secondly, the Doberman Pinscher: intelligent, brave and alert, extremely discerning of living people, will patrol the territory and is the perfect guardian. Thirdly, the Norfolk Terrier: loyal to its owner and wary of strangers. Fourthly, the German Shepherd: very docile, but very strong and agile in battle. Fifthly, the Rottweiler: loyal to its owner, fierce-looking, physically strong and swift. Sixthly, the Chinese Field Dog: they are very dutiful and house-sitting is their old profession.