Survival of the Unfit 
Darwin stated that a single example of an inferior species surviving by the sacrifice of a more fit 
species would negate his theory -  Some species of beetles and ants will break open their own eggs 
to feed the fungus they grow. Some ants nurture the insect parasite Lomechusa even to neglect of their own young.
 Carpenter Ants will defend Atemeles Beetle
 larvae in preference to their own young, the beetle then feeds on the ant larvae. Tetramoria Ants 
will rescue and care for a Anergates Queen, then kill their own queen and raise the Anergate's young,
 killing their own queen is suicide for colony. Cuckoo Birds practice parasitism on other birds
 who go along with the ruse. Amaxon Ants cannot feed itself nor rear its young, slave ants do it for them.