The remains of three Palaeolithic dogs, including one with a mammoth bone in its mouth, have been unearthed at Předmostí in the Czech Republic.
Germonpré, a palaeontologist at the Royal Belgian Institute of Natural Sciences, and colleagues Martina Laznickova-Galetova and Mikhail Sablin, first studied the remains, focusing on the skulls, to see what animals they represented. In the fossil record, there is sometimes controversy over what is a wolf, dog or other canid.
“These skulls show clear signs of domestication,” Germonpré said, explaining they are significantly shorter than those of fossil or modern wolves, have shorter snouts, and noticeably wider braincases and palates than wolves possess. She described them as large, with an estimated body weight of just over 77 pounds. The shoulder height was at least 24 inches. shows “quite clearly that the dog domestication process was underway thousands of years earlier than previously thought.”
http://www.pasthorizonspr.com/index.php/archives/10/2011/give-the-dog-a-bone