Mmm... there are geckos around the city at night, but they're not common.
Only other thing I can think of off the top of my head is "Birdie Street" (rough translation), where they sell all the songbirds. They sell herps as feeders for the birds, and some other kinds as well.
Also, have you had snake stew yet? If not, you should definitely check that out. I don't remember what type of snake they use since it's been such a long time, but it should be interesting all the same.
1.0 Pastel Ball Python, 1.9 Normal Ball Pythons, 0.1 African House Snake, 1.0 Savannah Monitor, 0.0.1 Argentinian Horned Frog