As seen in the graphic above (pulled from the LA Times), and because of last week's fatal attacks, tiger security improvement is needed. Soon. In 30 days, according to the Gate, SF Zoo will have a brand spanking new tiger-grotto security system. The architect who created the zoo's Grizzly Gulch exhibit, Sam Singer, will also now design the safer new tiger grotto. Although no details of the new tiger grotto designed have been released, we're......