Bonkers/Heartwarming

The end of "Is Toon Fur Really Warm?" where Marilyn hugs Skunky Skunk up until the Mood Whiplash.
In "The Day The Toon Stood Still," Toons are literally running out of time and fading away. Just before Lucky confronts the Big Bad, Bonkers tells him that if he doesn't hurry, all Toons everywhere will return to the drawing boards and eventually blank paper. Lucky is visibly shaken by this revelation and rushes into action. Moments later, when all hell breaks loose, you can see (for just a second or two) Lucky holding Bonkers and Fall-Apart Rabbit as they fearfully look on.
From "Basic Spraining," just two words: "Trust me."