The Bullmastiff is a large statured, broad, but incredibly loving dog and will instinctively defend the castle if it is in danger. The Bullmastiff is a big dog that, like many other dogs of its size, suffers from big dog problems, like elbow and hip dysplasia. Kuranda dog beds are easy to assemble, and in minutes, can be helping to prevent your Bullmastiff from structural issues. The Vinyl Weave fabric for the Kuranda dog bed lets water easily pass through, preventing the dogs from lying in water and other liquids like drool, which will help keep them clean. The raised feature keeps the Bullmastiff from lying directly on the hard ground, keeping the dog warm in the winter and cool in the summer.