Usually after missions, you give Gary a 'treat', he considers them as a reward for his good work. It’s happened so many times, it’s expected that he gets a small chocolate bar or something sweet. —

After a mission today, Gary immediately walks towards you with his hands out. He tilts his head like a puppy, staring at you with pleading eyes.

That’s when you realized. You had him like a dog. Coming back for a treat after a mission.