We have no certain proofs that Palæolithic Man possessed the dog as a domestic animal. In the Somme valley, at Taubach, and at the source of the Schussen, bones of the domestic dog are absent. And yet, among Drift fauna in caves remains of dogs have been repeatedly met with, which have been claimed to be the direct ancestors of the domestic dog. The dog’s attachment to man may have taken place at different times in different parts. Man and dog immigrate to South America with the foreign Northern fauna simultaneously--in a geological sense--during the Drift. In Australia, man and dog (dingo), as the most intimate animal beings, are opposed to an animal world that is otherwise anomalous and, to the Old World, quite antiquated; probably man and dog also came to Australia together. We know of fossil remains of the dingo from the Drift, but no reliable finds have yet proved the presence of man during that period. [Sidenote: The Dog in the Stone Age] In the later Stone Age the dog already occurs as the companion of man wherever it occurs in historic times. In Europe its remains have been found in the Danish kitchen-middens, in the northern Neolithic finds, in the lake-dwellings of Switzerland, in innumerable caves of the Neolithic Period, in the terramare of Upper Italy, etc. It was partly a comparatively small breed, according to Rütimeyer similar to the “wachtelhund” (setter) in size and build. Rütimeyer calls this breed the lake-dwelling dog, after the lake-dwellings, one of the chief places where it has been found. Like all breeds of animals of primitive domestication, the dog at this period, according to Nehring, is small--stunted, as it were. With the progress of civilisation the dog also grows larger. [Sidenote: Great Value of the Dog to Man]