Houston Zoo residents spend their early morning hours being fed, bathed and entertained activities visitors almost never see. But during Photo Day at the Zoo, youll be able to capture those images and many more. The morning light, lack of crowds and special keeper-assisted photo opportunities guarantee shutterbug visitors a clear shot. 7:30 a.m. 1513 North MacGregor. For information, call 713-533-6500 or visit www.houstonzoo.org. $8 to $20.