Two sisters snuck their Shih Tzu, Daisy, into the family road trip and their parents had no idea until a game of two truths and a lie blew the whole thing open. Daisy's little face in the reveal is the entire reason this one is number one.
A golden retriever gets reunited with the cat siblings he was raised alongside after two years in another state, and the cats start yelling before he's even all the way in the door. Proof that cats absolutely do remember.
A young woman tags along to a shelter with friends, just browsing, and one cat marches straight across the room, climbs into her lap, and starts licking her face. She went home with a cat. Obviously.
Owner leaves the back door open, comes home to find her golden retrievers have relocated the entire backyard water situation into the living room. Zero remorse, maximum tail wag.
At a pet store, a ferret decides the nearest warm tunnel is a young woman's hijab and simply moves in. Her laughing-crying reaction is somehow even better than the ferret.