For a second there, Sheldon nearly forgot he used to be a human in real life as well. Her fingers brushing against his floppy ears felt really really nice, his eyes closed blissfully for those brief moments and a purr was about rumble through his chest but she pulled away too soon for him to really pull full cat on her.

"Aa," he opened his eyes with a start as she was saying her farewells. With his cookie in his mouth still, all he could manage was a nod on his end - waving his paw at her just seemed too weird really. His long fluffy tail at least swished happily as she left. "'ye!"

Well, that was nice. He got cookies out of it to boot, but now it was time to head home.