J.B.
You probably would want to take your child to the dog show- I think they still have the flying dogs (catch frisbees) and the Australian shepherds who corral the sheep. Then you can go next door to the petting zoo. A little bit farther down you can go to the horse stables and see the horses. The bird show is also a great show as they have trained parrots who sing and big hawks who fly down from the ferris wheel. After the bird show you can go to the butterfly show and be in the same habitat as the butterflies. Pretty interesting. I don't know if they are doing the card stacking guy in the African American Museum on the second floor, but we went last year and he was pretty amazing. We are also going this weekend so I am not sure what shows are available yet. Have fun and I hope a few of these work out for you. You also might take him to the butter sculpture in the Embarcadero building. You could run in there when you are at the dog shows or after the petting zoo.