In some cases of the world, the Ant's which are only a few millimeters in size and have forbidden the lives of animals as well as humans. The International Union for Conservation of Nature (IUCN) has compiled a list of more than 100 ants that destroy the natural enviroment of deferent regions. 

The yellow Crazy ants have long  lagged or Maldives ants it is species ants, thought to be native to west Africa of Asian. They have been accidentally introduced to numerous  places in the world's tropics. 

The yellow Crazy ants very dangerous ants that spread all over the world from Africa and its color is yellowish orange and it has length of up to 5 mm and interesting thing it is crazy behavior. 

Yellow Crazy ants intraspecific eggression 

(those that are genetically similar) Rather than establishing saveral competitive nest with individual queen's yellow Crazy ants t establisheds upercolonies large interconnect nest containing multiple queen's. Nest have been found containing hundred of Queens and many magnitude of work, by cooperating yellow Crazy ants can successfully out number displace other species.,thereby dominating food and q resource. 

In conjunction with maintaining strong collaborative behaviour yellow Crazy ants have the nesting and foraging habits of typical generalist invader which allow colonies archive to high densities in variety of habitats, for instance ideal nesting ground for yellow Crazy ants rang from woody debris, rocky substrate tree bases leef little mulch, rock, pots plant,carport, pools filters and even electrical appliances such as air conditiones, television their omnivorous deit range from seeds and fruits in to vertebrates including frog, nesting birds and lizards then they attack in Union. 

Yellow Crazy ants are serious problems in sugercan because of their strong mutulaim with honeydew and nectar producing insects such aphid and scales they ants actively protect these insects specifically for the sweet surgery substances they produce in return providing them with save from predatory beetle.