I love cockatoos and parrots of all kinds. Granted, some of them can quite destructive when sharpening their beaks on man-made items. But they're smart, social, cheeky, intelligent, playful and they form deep bonds with their playmates. Hearing them in the wild all around me gives me deep pleasure. And Corellas, such as you have pictured here, are among my favourites, brilliant acrobats, so funny. :D
Bush turkeys. They'll invade picnics, gardens, any human habitat where they see an opportunity. They have the guts to fight goannas three times larger than themselves and win.
I feel compelled to comment on the breedism here. I'll admit that my comment about cats was speciesist. Thinking about it more, I might change my answer to blue jays. They are the rudest non-talking birds I've ever observed. Complete a-holes to every other bird! I've met many lovely and sweet cats, but I've never seen a blue jay that wasn't a jerk.
Regarding chihuahuas, they are not all rude little nippers. Before I worked at an animal hospital, I engaged in that kind of thinking, too. Having been bitten by one as a child, I was a bit wary. I soon realized that 1) If a dog knows that you're fearful or are prejudiced toward him/her, they're likely to return your feelings. 2) It's as wrong to prejudge any animal based on their breed or species as it is to prejudge a human based on their gender, race or appearance.