One of the most important transitions in human history was the domestication of animals, which began with the long-term association between wolves and hunter–gatherers more than 15,000 years ago. The dog was the first species and the only large carnivore to have been domesticated. The archaeological record and genetic analysis show the remains of the Bonn-Oberkassel dog buried beside humans 14,200 years ago to be the first undisputed dog, with disputed remains occurring 36,000 years ago. The domestication of the dog predates agriculture, and it was not until 11,000 years ago in the Holocene era that people living in the Near East entered into relationships with wild populations of aurochs, boar, sheep, and goats. Where the domestication of the dog took place remains debated; however, literature reviews of the evidence find that the dog was domesticated in Eurasia, with the most plausible proposals being Central Asia, East Asia, and Western Europe. By the close of the last Ice Age 11,700 years ago, five ancestral lineages had diversified from each other and were represented through ancient dog samples found in the Levant (7,000 years before present YBP), Karelia (10,900 YBP), Lake Baikal (7,000 YBP), ancient America (4,000 YBP), and in the New Guinea singing dog (present day).