Answering his questions!
Basically, here's what happened:
Frazzle is crying. Grover comes up and asks why he's sad. In his sad growls, Frazzle "explains" what happened. Then Grover asked what happened next, and Frazzle made "happy" growls, and laughing. Grover wants to know more, so then Frazzle makes angry noises.
Grover: So what did you do next?
(Frazzle growls and leaves.)
Grover: Oh. Well, I don't blame you. (Leaves)