Bat Pet.

[Flangepart]

Batman: "Fang, you poop on my cape again, Alfred gets a new leather mug coaster- I mean it!"

[LilCerberus]

At first, crooks didn't find Batman all that intimidating...
Then one day, while fretting over the matter, an actual bat got into his house.
At that moment, he realized, he should probably ditch the white uniform for a gray-ish one, perhaps with little yellow eyebrows painted on to express anger...