P.S. Sorry, ought to have included:
At the "need special" thing I said in Thai "I don't understand" to which he said (again, translate as you see fit as you will make more of it than I knowing reptiles!)...
"Need special. No Australia kap (yes?) - mai, mai. Need special hot and cold. Need special cricket - mai cockroach, no good. I show, I show - I make understand."
To which I nodded (poor ferang "wai") and went on my way confused!
I do have a mate here fluent in Thai that I could ask to go speak to him if he sounds half genuine...rather ask before bothering though.