Obviously, this little dog has a bone or two to pick with her giant acquaintance.
In this video uploaded to YouTube, Lilly, a 12-week-old chihuahua, launches an aww-worthy offensive on Vago the Great Dane. Lucky for little Lilly, Vago is a gentle giant. He's also got his human nearby keeping an eye on him just in case he forgets that when it comes to size, he's got the advantage.
But if this was a contest of style and pizazz, Lilly would definitely get our vote.
Look at her adorable barrel roll!