414 
MAMMALIA. 
eighth, month of their age. As a rule, until ten months old, 
they should not be shown game, or he trained in a steady, con- 
tinuous manner. 
Since the date when the Dog was redeemed by Man from a 
savage condition, its size, strength, and coat have submitted to 
Fig. 164.— Newfoundland Dogs. 
infinite variations ; a circumstance which makes it very difficult 
to class, in a small number of sufficiently homogeneous groups, 
all the races and sub-races now existing. Fr. Cuvier and Des- 
marets have divided all the varieties of Dogs thus — Matins, 
Spaniels, and Mastiffs. We will adopt this method, because it is 
easier to remember, though it is not without its faults. 
