Lassie (Lassie)

If Lassie isn't at the top of your 'Greatest Fictional Pets of All Time' list, are you even a fan of classics? Here’s the deal—Lassie didn’t just fetch sticks. Nope, she fetched kids out of wells, adults from fires, and basically carried the weight of common sense for an entire town on her furry shoulders. Fans face the eternal struggle: defending her against modern pet contenders who barely manage an Instagram trick. Lassie is the OG pet hero, making every other pet look like they're just playing dress-up!