A sly jackal befriended a strong camel, only because the camel could carry him across the river to a field of sweet crops on the far side, which the jackal could not reach alone.
Each night they crossed and ate. But the greedy jackal would finish quickly and then howl loudly, alerting the farmers — long before the slow camel had eaten his fill.
Caught and chased again and again because of the jackal's selfish tricks, the camel finally understood that a friend who thinks only of himself is no friend at all.