A woodchuck. My older brother and me were walking up the driveway to bring the cows back from the front pasture for their evening milking when a woodchuck came out of the brush on the run, heading right for us. My brother went up one fence post while I went up another. The woodchuck ran back and forth between us, popping his teeth and making angry sounds. It took a while before he tired and waddled away and we could get back to our chores.
A black bear, Canada goose, swan, robin and seagull.....does being swarmed and chased by wasps count?.....twice.
You know, I just realized....I don't think birds like me very much...
I don't think geese and swans like people very much. That is even true of 'domesticated' geese. The one that chased me as a child was domesticated. I think they are very territorial.