The domestication of wolves.

[Animal Rights]

This finding puts the first known domestication — that of dogs — in the same place as the domestication of plants and other animals, and
strengthens the link between the first animal to enter human society and
the subsequent invention of agriculture about 10,000 years ago.

A Middle Eastern origin for the dog also fits in better with the
archaeological evidence, and has enabled geneticists to reconstruct the
entire history of the dog, from the first association between wolves and
hunter gatherers some 20,000 years ago to the creation by Victorian dog
fanciers of many of today’s breeds.