631. I shan't allow you to approach us! (The Big Bang Theory)
632. It's not what it looks like, I'm here to help (The Big Bang Theory)
633. Service Underdog (Underdog)
634. I'm her Shoeshine (Underdog)
635. I'm secretly a super dog (Underdog)
636. Stop staring at me like I was created in a lab (Underdog)
637. We're running away from a mad scientist (Underdog)
638. Service Dog, Service Dog, that's what I am! (Underdog)
639. Please don't ask my handler a million questions (Regular)
640. Service DogFish (Underdog)
641. Give me some space! Or I'll make you move (Underdog)
642. I'm a hairy, four legged super hero (Underdog)
643. I'm like Superman with a flea collar (Underdog)
644. My secret identity is a mild mannered dog (Underdog)
645. My handler has no need to fear, service dog is here! (Underdog)
646. We're hiding from Cad (Underdog)
647. There are no bad dogs, only bad owners (Underdog)
648. I'm dressed for work, don't pet me (Underdog)
649. We can't talk right now, we're busy (Regular)
650. The Sorting Hat put us together (Harry Potter)
