Elephants Evolve Smaller Tusks Due to Poaching - "The largest male African elephants have the largest tusks. These tusks are extremely important in elephant behavior, with the largest tusks usually resulting in more successful intimidation of smaller males or winning fights for female elephants. But when the largest animals are killed, it changes the breeding patterns of the animals. In short, without the largest males for competition, the smaller males with their smaller tusks will breed more successfully, and their offspring will have smaller tusks." (ja, die Galapagos Finken waren wohl eher, aber Elefanten sind auffälliger ... )