evidence: It’s been said that if you put 100 black ants and 100 red ants into a jar and leave them alone, nothing will happen. But if you shake the jar violently with the ants inside, they will immediately start attacking each other. According to some experts, this is because the red ants see the black ants as the enemy, and the black ants see the red ants as the enemy. The real enemy, of course, is you — the person who threw them together and then shook the jar. [...] *The story of red and black ants in a jar is one that has often made the rounds on social media. It’s often attributed to naturalist David Attenborough, though this has been debunked. The source of the story may be the novel "Cat’s Cradle" by Kurt Vonnegut. Others have said that many species of ants, if put together in a jar, will attack each other regardless of whether they are shaken or not.