Sad mama dog reunites with her lost puppies. A dog mama named Cora ended up in a shelter after her owner had taken her babies away from her. Depressed, she wouldn’t move away from a corner, so The Marin Humane Society tracked down Cora’s puppies and reunited the family
A dog was the perfect surveillance excuse. Walking it past villain's various operations had revealed access points, cameras, traps, and employees that the hero had never seen before. They were just congratulating themself when the dog perked up and then yanked.
"Sorry!" the hero cried, as their dog jumped up at a very expensive suit. "So sorry, my dog just really seems to have taken a real interest in you." The hero looked up at their victim, and their heart stopped.
The villain's eyes sparkled knowingly. "Just the dog?"
I had a pack of dogs living at my house, and a rabbit decided to disguise itself as a dog to sneak into my garden. They couldn’t tell it was a rabbit, but I could, and took its disguise off. Then they all surrounded it, and proceeded to enact “dog justice.” Which was acting out courtroom scenes to determine the rabbit’s guilt or innocence.