WC turtles, snakes, frogs and toads starting when I was 4 or 5. I only ever kept them for a day or two and than let them go. I was just interested in watching them for a bit.
First purchased was a pair of green iguanas. I told my dad that I wanted one and he let me get two - lol. He didn't have a clue. Unfortuantely, they were both sick and infested with mites. I got the mites down, but they unfortunately parished soon after. I was way to little to care for them as adults though. Pretty nutty eh.