Well, animals still have that instinct where they will do anything to survive. On the other hand, humans do not.

The mysterious stupid gene is the answer. It's the gene that tells some humans that it is better to sit on their large gludial protrusions - while eating Doritos and watching Divorce court - and collect money from other people. I see examples of this genes effect often.

This one time, there was this homeless guy, 6'2", 190lbs. He had the audacity to ask me for money while I'm on my way to work! I handed him an application.

Their was this other time, when a Republican told me that Democrats want to increase government spending and that Republicans want to reduce it. This gene is all to powerful.

Once scientist figure out how to duplicate the stupid gene and insert it into the DNA of clones, they will have no trouble making clones. I just hope these clones get jobs.

The year 2035. There will be an epidemic of homeless, Brad Pitt clones in the world's major cities. Thousands of Brad Pitts' begging for money and asking for starring roles in period pieces. People, ready your cameras!!