Maybe we’ll find out some day. Or maybe there is some evidence from wild/feral dog pack behavior.
My favorite quote - don’t know the author;(
*When the great creator separated man from the animals, he brought them all together in a vast plain. He drew a dividing line in the earth and had man stand on one side and, the animals stand on the other. He then separated the earth into a great divide. As the divide between the two sides expanded, so that none could cross, Dog jumped over and stood with man.*