hmm so, what is meant by type? My initial idea is that its a large mouse with a tail of the same size so it comes to around 20cm in length, large ears, wide cheeks which taper to a point on the nose but not too fine a taper it cant look like an odd triangle. The mouse has to be healthy with no signs of illness, pregnancy, mites etc or it can be an instant disqualificaltion with having mice with mites particilapting in the show breaking the show guidelines anyway. Eyes must be bright and mouse must have all whiskers. Ears must be shapely with no folds (?) or bits missing. Coat I'm presuming depends on the type of mouse but Im guessing it must have a healthy sheen and the mouse can't look 'unkept'. Hopefully my hours of research have done me well?