He was about 1 at his first work and got bitten but it didnt make him change his mind. He was working with another dog only 2 times. (They didnt attack eachother, worked together.)
He doesnt go in to an empty den and only barks when meeting a charlie and after he came off it another dog works it.
When coming off the fox after 1-2 minutes he looks like "whats now?" and either ready to go back or not but with the same doubt on his face.
Otherwise is a dog with selfconfidence.
YIS,
AW.