Heartwarming / Under the Umbrella Tree

• Iggy once fell off a shelf he was climbing and hit his head, in the process developing Easy Amnesia. He forgot literally everything, including his own name and those of his roommates. Gloria, Jacob, and Holly finally decided to accept Iggy for what he had become, even if they would never truly recognize him again. (Of course, by the end of the episode Iggy had hit his head once more and returned to normal.)
• Holly's sweet, motherly lullaby "Sleep, Little Friend," which she sang to Gloria in the episode "Gloria Can't Sleep" and to all three of her roommates in "On the Deck."
• In the Halloween episode, when the injured Iggy has to stay at the animal shelter, Holly, Gloria and Jacob miss him too much to enjoy their Halloween party that night. In the end they decide to go be with him at the shelter, and all the party guests come along, so everyone gets to celebrate Halloween together after all, and the various other animals who have to stay at the shelter get to celebrate too.