This is a video about the dog breed Mastiff, from the www.naturallyhappydogs.com website.
Diana has had English Mastiffs for nearly 20 years and Mark has had them since the late 1970s. This huge dog was originally bred to guard the home and they still have an instinct to guard but are generally placid and relaxed.
They enjoy exercise; they can take a lot if introduced to it gradually and are particularly partial to a good swim. They can also be quite intelligent and trainable in a number of areas. Their size makes them expensive and they can suffer from health problems but are a good family dog, if you can handle the slobber!