SYDNEY, Australia — In the otherwise boisterous world of the Australian news media, the Australian Broadcasting Corporation, known as the ABC or ABC News, tends to resemble a very serious aunt.

The public broadcaster is smart, loquacious and a bit boring; even audience members for its live news discussion program, “Q&A,” can sometimes be seen drifting to sleep.

But on Tuesday, the internet met a livelier and still very Australian ABC. When President Trump posted a tweet that mistakenly tagged the Australian ABC News rather than the American one, the Australian broadcaster was quick to respond with a cheeky GIF of a koala.