There are three cows and a lion. The lion ate red bull, black cow and finally white cow.

There are three cows. They graze in the wild in a very friendly and harmonious way. A lion peeked at them for a long time, trying to catch them, but he thought that as long as they were together, there would be no chance. So he began to secretly spread gossip, saying that one was against the other, until there was jealousy and distrust between them. As soon as the lion saw them go their separate ways and eat grass separately, he immediately attacked them one by one. In this way, he can relax

Ignorance among friends is an opportunity for enemies to attack.