His eldest son Henry (d. 1784) is known as the author of a pamphlet entitled _Christianity not founded on Argument_, to which a reply was published by his brother William (1709-1785), who was besides engaged in a controversy with Dr Conyers Middleton on the subject of miracles.
See _The Works of H. D. ... abridg'd with an account of his life_, by F. Brokesby (2nd ed., 1723) and Thomas Hearne's _Diaries_.
DOG, the English generic term for the quadruped of the domesticated variety of _Canis_ (Fr. _chien_). The etymology of the word is unknown; "hound" represents the common Teutonic term (Ger. _Hund_), and it is suggested that the "English _dog_"--for this was a regular phrase in continental European countries--represented a special breed. Most canine experts believe that the dog is descended from the wolf, although zoologists are less certain (see CARNIVORA); the osteology of one does not differ materially from that of the other: the dog and the wolf breed with each other, and the progeny thus obtained will again breed with the dog. There is one circumstance, however, which seems to mark a difference between the two animals: the eye of the dog of every country and species has a circular pupil, but the position or form of the pupil is oblique in the wolf. W. Youatt says there is also a marked difference in the temper and habits of the two. The dog is generally easily managed, and although H. C. Brooke of Welling, Kent, succeeded in making a wolf fairly tractable, the experience of others has been the reverse of encouraging. G. Cuvier gives an interesting account of a young wolf which, having been trained to follow his master, showed affection and submission scarcely inferior to the domesticated dog. During the absence from home of his owner the wolf was sent to a menagerie, but pined for his master and would scarcely take any food for a considerable time. At length, however, he became attached to his keepers and appeared to have forgotten his former associate. At the end of eighteen months his master returned, and, the moment his voice was heard, the wolf recognized him and lavished on him the most affectionate caresses. A still longer separation followed, but the wolf again remembered his old associate and showed great affection upon his return. Such an association proves that there is very little difference between the dog and the wolf in recognition of man as an object of affection and veneration. H. C. Brooke succeeded in training his wolf so well that it was no uncommon sight to see the latter following his master like a dog. The wolf did not like strangers, however, and was very shy in their presence.