Given the importance of wolves in the traditions of the Indo-European peoples as far back as one can go into the archaeological, literary or linguistic records the claim that the first domesticated dogs evolved from an ancient species of wolves found in Europe some 10,000 to 30,000 years ago is somewhat appropriate. From Britain’s Independent newspaper:
“The domestic dog originated from wild European wolves in the Stone Age before the development of farming, when humans hunted and gathered their food, according to a genetic analysis of ancient canine remains.
Scientists have long puzzled over how domestic dogs came into existence and their efforts have centred on the grey wolf, their closest living relatives of dogs, but there is conflicting evidence on when and where wild wolves were first tamed.
Earlier studies suggested that wolves may have been domesticated by the first farmers about 10,000 years ago in the Middle East or Asia, possibly to guard livestock. However, the latest study has found that it began much earlier in Europe, long before the development of agriculture.
Professor Robert Wayne of the University of California at Los Angeles said that an ancient European lineage of grey wolf, which has since gone extinct, is the most likely direct ancestor of the first domesticated dogs based on similarities in genetic sequences.”
For Celtic and Germanic expressions of wolf cultism may I suggest this article on the Fianna of ancient Ireland some of whom, as the annals record, spent their time ag faoladh “…wolfing around”.