Question: Which is bigger, Griffon Bruxellois or English Mastiff?

Passages:
The English Mastiff is a breed of extremely large dog (often known simply as the Mastiff) perhaps descended from the ancient Alaunt and Pugnaces Britanniae, with a significant input from the Alpine Mastiff in the 19th century.  Distinguishable by enormous size, massive head, and a limited range of colours, but always displaying a black mask, the Mastiff is noted for its gentle and loving nature.  The lineage of modern dogs can be traced back to the early 19th century, but the modern type was stabilised in the 1880s and refined since.  Following a period of sharp decline, the Mastiff has increased its worldwide popularity.  Throughout its history, the Mastiff has contributed to the development of a number of dog breeds, some generally known as Mastiff-type dogs, or, confusingly, just as "Mastiffs". The Molossus of Epirus (Greek: Μολοσσός της Ηπείρου) is a large dog breed originating from Greece.  It is a livestock guardian that has been bred since the age of Alexander the Great for protecting livestock from carnivorous mammals including the wolf, European jackal and the brown bear in the mountainous regions of Greece, especially Epirus.  The Molossus is a pure Greek breed and is believed to be one of the main ancestors of today's Molosser breeds, such as the English Mastiff and the Neapolitan Mastiff, The Griffon Fauve de Bretagne (FCI No.66) translated into English as the Fawn Brittany Griffon, is a breed of dog of the scenthound type, originating in France in the region of Brittany. Aicama Zorba of La-Susa or Zorba (26 September 1981 - Unknown ) was a male Old English Mastiff who was recognized by Guinness World Records as the heaviest and longest dog in the world. The Hinterrhein (German; Romansh: "Rein Posteriur" ; English: Posterior Rhine ) is one of the two initial tributaries of the Rhine (less in length but bigger by volume) in the canton of Graubünden in Switzerland, flowing from the village Hinterrhein near the San Bernardino Pass through the Rheinwald valley into a gorge called Roflaschlucht.  In this gorge an equally sized tributary, the Avers Rhine, adds waters from the deep Val Ferrera and the very remote alp Avers and its side valley "Valle di Lei" on Italian territory.  After the Rofla Gorge, the valley widens into a section called Schams.  The Hinterrhein then reaches Andeer, before passing through another gorge, Viamala just before Thusis.  Now another tributary of slightly bigger volume reaches the Hinterrhein as the Landwasser, draining a system of valleys, which is commonly known as Davos joins via the Albula coming from the Albula Pass, which is also the name of a railway line that has become a UNESCO world heritage.  Another big tributary of Albula river is Gelgia from the Julier pass area.  After flowing to Rothenbrunnen through a valley called Domleschg with an incredible number of castles (showing the importance of transit in the area) again the river is left alone from civilisation in the floodplain "Isla Bella" near Rhäzüns, before it joins the Anterior Rhine at Reichenau, all of them also in Graubünden. Chiari-like malformation (CM) is the most common cause of foramen magnum obstruction and syringomyelia in dogs.  Syringomyelia (SM) is a disease of the spinal cord typified by fluid filled cavities, or syrinxes, within the spinal cord substance.  The disease is caused by the obstruction of cerebrospinal fluid (CSF), in the nervous system.  A situation of high pressure in the spinal cord compared to low pressure outside, leads to fluid accumulation, which eventually forms cavities.  CM is a condition characterized by the mismatch of size between the brain and the skull.  The skull is too small causing part of the brain to descend out of the skull through the opening at its base, crowding the spinal cord.  The cause of CM is not yet fully understood.  CM is rare in most breeds but reportedly has become very widespread in the Cavalier King Charles Spaniel and the Griffon Bruxellois (Brussels Griffon).  Some researchers estimate that as many as 95% of CKCSs may have CM.  It is worldwide in scope and not limited to any country, breeding line, or kennel, and experts report that it is believed to be inherited in the Cavalier King Charles Spaniel.  CM is so widespread in the Cavalier that it may be an inherent part of the CKCS's breed standard.  This disease not only affects thousands of dogs, but a similar condition affects over three hundred thousand children yearly.  Therefore, canines are an appropriate model for the treatment of the human condition. Trevor Dwyer-Lynch 1968, is a Black British actor, presenter, and stand up comedian.  Born and raised in Moss Side and Salford, calls himself a "Mossfordian" trained in Drama and Performing Arts at City College /Arden School of Theatre Manchester in 1990, Dwyer-Lynch has appeared in numerous television and theatre productions, merging both serious roles—such as "Gloucester" in Shakespeare's King Lear— to his best known comedic role in "Coronation Street" as Patrick Tussell the taxi-driver working for Steve McDonald (2002–2005).  A dog lover, his 15-stone, Old English Mastiff also appeared with him in an episode, his dog spoiling "Patrick's" attempt to win over love interest Janice Battersby.  Lynch achieved one of his wishes working for the Ken Loach in "Looking for Eric", he publicly expresses a desire to work with Directors Shane Meadows, Mike Leigh and Steve McQueen The Bullmastiff is a large-sized breed of domestic dog, with a solid build and a short muzzle.  The Bullmastiff shares the characteristics of molosser dogs, and was originally developed by 19th-century gamekeepers to guard estates.  The breed's bloodlines are drawn from the English Mastiff and the extinct Old English Bulldog.  It was recognized as a purebred dog by the English Kennel Club in 1924.  They are quiet dogs and very rarely bark. Dog anatomy comprises the anatomical studies of the visible parts of the body of a canine.  Details of structures vary tremendously from breed to breed, more than in any other animal species, wild or domesticated, as dogs are highly variable in height and weight.  The smallest known adult dog was a Yorkshire Terrier that stood only 6.3 cm at the shoulder, 9.5 cm in length along the head and body, and weighed only 113 g .  The largest known adult dog was an English Mastiff which weighed 155.6 kg and was 250 cm from the snout to the tail.  The tallest known adult dog is a Great Dane that stands 106.7 cm at the shoulder. The Griffon Bruxellois or Brussels Griffon is a breed of toy dog, named for their city of origin: Brussels, Belgium.  The Griffon Bruxellois may refer to three different breeds, the Griffon Bruxellois, the Griffon Belge and the Petit Brabançon.  Identical in standard except for coat and colour differences, in some standards they are considered varieties of the same breed, much like Belgian Shepherd Dogs.

Supporting sentences:
 The Griffon Bruxellois may refer to three different breeds, the Griffon Bruxellois, the Griffon Belge and the Petit Brabançon. The English Mastiff is a breed of extremely large dog (often known simply as the Mastiff) perhaps descended from the ancient Alaunt and Pugnaces Britanniae, with a significant input from the Alpine Mastiff in the 19th century.  Distinguishable by enormous size, massive head, and a limited range of colours, but always displaying a black mask, the Mastiff is noted for its gentle and loving nature.