The San Antonio Zoo has the first children’s zoo especially created for the 5-and-under set. Young explorers get their own entrance to Kronkosky’s Tiny Tot Nature Spot, stone lily pads to hop on. From there, the only problem is what to do first: Make a meal in the outdoor mud kitchen? Look for animal tracks? Get face-to-fin with giant fish in Tropical Waters? Stop what you’re doing around 2 p.m., when the flamingos are fed shrimp — the snack that makes the birds pink.