James doesn't linger very long. He only scratches at Sirius' ear long enough to make the dog happy before coming back to the night and what it was going to bring.

He heaves a reluctant sigh that he would never actually have let out had he known this dog was in fact a shapeshifter and smiles reluctantly down at the dog.

"Bye, doggie."

...If he knew this was a person, he would never.