CNN CNN Tonight July 2, 2014 02:22:00
Often told by animal hunters. the problem is when you go out and kill particular animals for that purpose, you actually get the big ones, the big shiny ones, the strong ones, the one withes you kill are the ones that have the strongest survival codes and genetic codes. as a result, the ones that stay are the weaker species. when they reproduce, you actually help kill off the herd because they don't have the strongest genes. it actually doesn't work. >> wow. >> in her defense -- >> a zooologist. i love it. >> go, mandy. >> in her defense -- >> mandy, mandy, mandy, go ahead. >> one of her pictur...