While the leaders were there to discuss more solemn topics, including the Paris terrorist attacks and how each country would address ISIS, the cats were a welcome moment of levity.
Antalya is in the south of the country, but up north in Istanbul, cats run the streets.
In fact, The Wall Street Journal suggested Istanbul be renamed "Catstantinople" because of how prevalent and beloved cats are in the city.
So there's our definitive proof: Cats have taken over the world.
Citations: Three cats breach security at the G20 summit (Yahoo!), President Obama at the G-20 Summit: "We Are United Against This Threat" (White House), G20 vows joint security steps after Paris attacks; no new strategy on Syria (Reuters), Why Istanbul Should Be Called Catstantinople (The Wall Street Journal)