2x10, Deliverance. Sam, upon seeing Monty the dog in the gym: "Hetty said you can't bring rescues in here."
Sucker for a Hard Luck Case:
The Spider
The signs had been there since the very beginning. But it took the NCIS Office of Special Projects a while to clue in.
It was Deeks' third day back with them, after the undercover LAPD op that had seen their new liaison blown up and subsequently stitched back together by a veterinarian. Kensi still found herself anticipating the moment each morning when she first saw Deeks, and could reassure herself he was really back and safe. Not that the team really cared about their new liaison, since his liaising sucked and he was a total goof and also annoying. But as Hetty had said, he was kind of 'theirs' now, and nobody messed with their stuff.
This morning Kensi was running late. Not late late, but I'll-only-have-time-to-dump-my-purse-and-sit-down late. Hopefully Hetty wouldn't be around to witness her entrance. But as she slipped her ID card back into her pocket and let the last door buzz closed behind her, Kensi saw Deeks coming down the hall towards her, heading back outside. Out of a top secret, undercover government site that took at least a couple minutes of IDing, passwording and scanning to exit and re-enter.
What was he up to?
Deeks had a coffee cup in one hand and a wide grin on as he waved good morning.
Kensi gave him a weird look as he passed, but she absolutely refused to ask what he was doing. It was too early in the day to encourage his antics.
Then she stopped, realising exactly what she had just looked at.
"Deeks?"
He turned back, smiling at her. "Yes, oh lovely partner of mine?"
"You're holding your coffee cup upside down."
"And?"
Kensi frowned. "Why is your coffee cup upside down?"
"Oh." Deeks tapped the bottom of the cup lightly with his free hand. "I caught a spider in the Ops room. Gonna put him outside."
He said it like it was the most natural thing in the world, and as he let the door shut behind him, she realised he hadn't even been joking. Kensi chewed on the edge of her lip as she continued on into the bullpen, and then shrugged off the spider rescue as another of his quirks when they received a case a couple minutes later.