Glorious, isn't it? Raising the walls of the grotto 16.4 feet, in order to meet the minimum guidelines of the Association of Zoos and Aquariums, the first phase of improving the SF Zoo's four big-cat grottos is complete. The tweaks were needed, as most of you know by now, after Siberian tiger Tatiana escaped and killed Carlos Sousa Jr. during the now infamous Christmas Day tiger attacks. The second phase of the project, according to......