This article is from the Mastiffs Breed FAQ, by mmcbee@access.mountain.net (Mike McBee) with numerous contributions by others.
A Mastiff costs more to maintain than smaller breeds due to
its large size and weight. Larger crates cost more. More and
larger consumables are needed - food, toys and the like. Many
medicines, such as antibiotics, heartworm preventative and
anesthesia are prescribed based on weight, so these cost
more. A Mastiff on a 'chewing binge' can cause much more
damage in a shorter time than smaller breeds.
 
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