Can anybody suggest a good ZOO? Preferrably with giraffe..somewhere near in Manila area..thanks!

You can check this roster I found. This is according to thephilippines.com http://www.thephilippines.com/2015/05/top-5-zoos-to-visit-in-philippines.html#.V1ozhdJ95dg

We super love Avilon Zoo in Rizal! I don't remember seeing a giraffe, but I love how it's more sanctuary than zoo. They also have a petting zoo in Tiendesitas