An ant is the most persistence animal.

An ant is the most persistent animal in the world. They can very hard work which cannot we imagine. It can carry 50 times load on your own weight. Day by day, they amass huge amount of food for future livelihood. They are very conscious of their future and bonding.
Ant living with grouping ties. They search food of their group basic. If any ant find out any source of food availability, then call all of the members and collection the food for preserving next time.
Ant is not lazy or indolent animal. They always survive of many critical moments and maintain their unity.
So, ant teach a moral of the story that "Unity is Strength" and always sustain anything for future livelihood.