The B-plot of the episode "Rudy One" involves a very upset Sizzle being teased by a new cat on the block. Nuzzle ends up though telling her not to insult the new cat back as she'd be sinking down to his level and she knows that the insults are not true. And how does Sizzle thank Nuzzle afterwards? By very cutely kissing Nuzzle. Needless to say, Nuzzle definitely enjoyed it.