We would naturally expect to find the primitive peoples, who are not provided with artificial protection against the wind, supplied with an extra quantity of hair or having a hairy coat like animals; but this is sometimes found among civilized people.

This abnormal presence of hair on the human body has been known for many years; the description of Esau in the Bible is an early instance.
Aldrovandus says that in the sixteenth century there came to the Canary Islands a family consisting of a father, son, and two daughters, who were covered all over their bodies by long hair, and their portrait, certainly reproduced from life, resembles the modern instances of "dog men." In 1883 there was shown in England and France, afterward in America, a girl of seven named "Krao," a native of Indo-China.

The whole body of this child was covered with black hair.

Her face was of the prognathic type, and this, with her extraordinary prehensile powers of feet and lips, gave her the title of "Darwin's missing link." In 1875 there was exhibited in Paris, under the name of "l'homme-chien" Adrien Jeftichew, a Russian peasant of fifty-five, whose face, head, back, and limbs were covered with a brown hairy coat looking like wool and several centimeters long.

The other parts of the body were also covered with hair, but less abundantly.