In the video below, a tiny penguin has had enough of a human who got a little too close, and charges the man while barking. This surprises the gawker, who slips on the ice and falls down while backing away from the flightless bird.

Still, you wouldn’t necessarily think any of that trademark penguin loneliness carried over to life at the zoo. Not so. Just look at this video taken at Fota Wildlife Park in Cork, Ireland. While all the other penguins scurry off to greet the approaching food truck, one lone penguin stands alone, gripped by an overwhelming feeling of social isolation. Either that or he just wasn’t hungry.