CHAPTER XVII 
ORIGIN OF DOMESTICATED ANIMALS 
Domesticated mammals - The dog - The horse - The ass - The ox- The sheep - 
The goat - The pig - The cat - Domesticated birds - The hen - The goose - The 
duck - The turkey - The peacock. The swan: The guinea fowl - Additional 
races and semidomestication . Unwelcome domestication 
As the subject matter of Part II constitutes an application of 
the principles discussed in the early chapters, we are ready at 
once to proceed, without special introduction, to the detailed study 
of the origin of special races of domesticated animals. 
DoMESTICATED MAMMALS 
The dog (Canis familiaris). Of all the wild animals that have 
been brought into the service of man, some form of dog was 
undoubtedly the first, for 
reasons brought out in the 
chapter, How Animals came 
to be Domesticated. His 
exact origin is of course un- 
known, but he has numerous 
wild relatives in all parts of 
the world, not only within 
historic times but even to 
the present day. The near- 
est of these are the wolf and 
the jackal in their various 
forms, both of which are said to breed freely with the domes- 
tic dog upon opportunity, and both of which, more especially 
the wolf, have been frequently domesticated. The Indian, for 
example, kept numerous “dogs,” mostly developed from the 
207 
Fic. 34. The collie, one of the finest 
domesticated types 
