. The animans and man; an elementary textbook of zoology and human physiology. mitive man of the Glacial epoch, there arealso found the bones of various animals, but these seem to bethe remains of kinds that were either his victims or his con-querors in the raw struggle for existence of those ancienttimes. However, when the pre-historic Egyptians emergedfrom the Stone Age into the earliest light of history theyappear with cattle, sheep, donkeys and dogs already fullydomesticated. The domestication of animals is the result of severaldifferent factors. First, there may be the simple captureand t
. The animans and man; an elementary textbook of zoology and human physiology. mitive man of the Glacial epoch, there arealso found the bones of various animals, but these seem to bethe remains of kinds that were either his victims or his con-querors in the raw struggle for existence of those ancienttimes. However, when the pre-historic Egyptians emergedfrom the Stone Age into the earliest light of history theyappear with cattle, sheep, donkeys and dogs already fullydomesticated. The domestication of animals is the result of severaldifferent factors. First, there may be the simple captureand taming and using of individuals of a wild comes the rearing in captivity of young of this species, 258 DOMESTICATED ANIMALS 259 and the easier taming of these home-reared individuals be-cause of their earlier acquaintanceship with man. But in this rearing in captivity a new element enters almostat once. That is the choosing or selection of certain ofthese young to be allowed to grow up, and again the choos-ing among these when grown up of those to be the parents. FIG. 135. Assyrian hunters with great dogs. From an Assyrian wallrelief of 668 , now in the British Museum. (After Keller.) of more young. This selection may be almost unconsciouslydone, or it may be made intentionally and carefully, so as topreserve the most desirable individuals and have them givebirth to others like themselves. Then there comes the crossing of special individuals or thehybridizing with other races in the hope of adding or com-bining in the offspring the desirable qualities of both kindsof parents. It is this careful selecting and crossing that are m
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