Pointing to the Bacon.

“The chimps did badly, able to learn the meaning of a pointed finger only after lots of training. The apparent explanation for these results was that pointing — and the social smarts behind it — required a humans-only level of intelligence and evolved in our ancestors only after they branched off from the ancestors of chimpanzees some 7 million years ago. When Tomasello suggested this idea to Hare, however, Hare demurred. ‘I said, “Um, Mike, I think my dogs can do that.”‘”

TIME’s Carl Zimmer “probes “the secrets inside your dog’s mind.” And what he finds is much like the articles here and here. Like babies, dogs (including Berk) understand pointing because it was evolutionarily advantageous for their ancestors to comprehend our behavior. Put another way, the dogs that watched us verrry carefully in the scavenger days, and ingratiated themselves accordingly, were the ones that often fared better than their more feral (and unobservant) friends.