When roused to fury the mastiff is one of the most tremendous animals with which we are acquainted, and consequently one of the most difficult to be overcome in combat. He is, however, capable of a steady attachment towards his master, and will protect him from injury at the risk of his own life. 37. _The BULL-DOG is smaller than the mastiff, but in general form is nearly allied to it: the body is robust, the snout somewhat flatter than that of the mastiff; and the lips are pendulous at the sides._ For courage and ferocity the bull-dog is exceeded by no British animal of its size. Since the horrid practice of bull-baiting has been discontinued in this kingdom, the race of these dogs has much declined; and the few that are now seen are employed by butchers and other persons as watch-dogs. 38. _The TERRIER is a small and hardy kind of dog, the name of which is derived from its usually subterraneous employments._ _Some terriers are rough, and others smooth haired. They are generally of reddish brown, or black colour, short-legged, and strongly bristled about the muzzle._ These dogs, the determined enemies of almost every species of vermin, are of great use to farmers and others, in the extermination of rats, polecats, and similar depredators. They are also employed in driving foxes from their dens, and on this account are generally attendants upon every pack of fox-hounds. Formerly they were used in rabbit warrens, to expel these animals from their burrows. In character they are fierce, keen, and hardy; and, being remarkable for vigilance, they are admirable house-dogs. 39. _The LURCHER is a dog apparently partaking of the nature both of the terrier and the grey-hound; there are two varieties, one covered with short and thickset hair, and the other with long and harsh hair._ As this dog hunts both by sight and smell, and takes his prey without noise, he is frequently employed by poachers in their nocturnal excursions in pursuit of game. When in the midst of game the lurcher does not, like most other dogs, either bark or suddenly run upon it; but, by a seeming neglect, he deceives the object till it comes within reach, and then suddenly springs upon and secures it. 40. _The TURNSPIT is a small dog, with short and generally crooked legs, and the tail curled upward._ These dogs were formerly much employed to assist in the roasting of meat. For this purpose they were placed in a broad kind of wheel connected with the spit, which they turned round by running in it as a squirrel does in his cage. They are still used in this capacity in most of the countries of the Continent; but being now in little request in England, the breed is nearly extinct with us. 41. _The WOLF_ (Canis lupus) _is a ferocious animal of the dog tribe, of brownish colour, with pointed nose, erect and sharp ears, and bushy tail bent inward._