I am in New Zealand, and it is presently our truffle season. I have three dogs that have been trained to search for truffles, two of them work well, Indy (Cocker Spaniel), and Ollie (Sydney Silky x Maltese). The third one is Fozzie (Jack Russell x Border Terrier) who can locate the truffles but prefers things to move so is learning stoat hunting. My fourth dog is Haggis (springer spaniel) who is just a pup at 8 months and is starting to learn how to search for truffles.
I will be using Indy for these classes.