"Luck of the Fryish" has always been a favorite of mine. Not quite as tear-jerking as Jurassic Bark, but still a little sad with a somewhat somber ending.
People frequently show more affection in movies to animals than to humans. The Walking Dead spent years graphically and brutally killing humans both dead and undead and no one flinched. Then one episode the starving protagonists killed a pack of feral dogs for food and suddenly there were tears shed.
Yep! It's the one where Fry remembers the seven-leaf-clover. I thought the scene with Yancy naming his son Phillip since his brother went missing was one of the best scenes in the series.