That is definitely not what Stone had had been expecting. The growl dies after a moment, and Stone stares at the dog with a frown. He's not really familiar with the concept of pets, just work animals and creatures kept for food, so this is either another fully sentient being, or some kind of predator animal.

Given what he's heard about talking to the idea-people, he's leaning towards the former. "So is this your fault?" he asks suspiciously.