Yeah, I remember seeing a comedy skit about a guy carrying cocaine into New Zealand, freaking out when a sniffer dog singled out his baggage ... and then having to pay a fine for the apple core he left inside it ;)
First time I came here, I was so out of it (through being tired) by the time I got to Auckland that when the dog came up and started wagging at my bag I found myself bending down to pet it before thinking "What's this dog doing in an airport?..."
Response "Er, that's a drug dog mate, any idea why he's so interested in your bag?"
Can't remember exactly what I said then; I guess having had a dopehead flatmate a short while previously probably had something to do with it, and I think I mentioned that.