With their wobbly gait and tuxedo-style fur, penguins are goofily adorable no matter what they do.

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.
Watch the cutest wild animal attack ever:

[via Asylum UK]