From PopSci we learn that dogs are willing to interact with social robots, but not as well as they do with humans:
In the centuries-old best friendship between dogkind and humankind, humans are apparently easily replaced with robots. Seemingly loyal canines are totally willing to interact with cold, hard machines, according to a new study in Animal Cognition, gazing lovingly at their robot faces and finding hidden foodstuffs that the robot pointed to. Robots, stop taking things away from us!
The study investigated whether or not dogs would be willing to interact with an unfamiliar robot. It found that the dogs would interact with a cyborg–if the robot seemed like a social being, as evidence by its ability to talk to the dog and its owner.
The study did however find that the dog still reacted better with humans. So basically, the dog will sell you out to the eventual robot overlords, though he might not enjoy it as much as he enjoys you. (Did I say “overlords”? I meant “protectors.“)