[...All right, that is definitely a strange way of speaking and Eustace can only turn and stare at him. However, he doesn't take a second thought about it, instead focusing on the actual content and watches as the dog accepts the attempt and allows for the pet.

The small frown returning, he puzzles over this.]

Hm...I see.

[He also agrees that this might not be good for the dog, but...he's aware that dogs tend to eat whatever is on the ground.]

While I think as a small treat it might be fine, I'm concerned whether cinnamon is actually toxic for the dog.