Hi It is a shame that the treats, etc route has not worked. I have had cases where no amount of love and treats has been successful. Have you tried hissing and putting them away for a few minutes every time they bite? Some owners on the list seem to be set against gentle scruffing but I have found it to be very successful in cases where all else has failed. It is the natural act of a ferret to assert dominance by grabbing the neck of another and dragging them. This can be reproduced while still being gentle with the fert. A gentle drag to the cage and five minutes (no more) locked inside and then release them. Lector, an adult male rescue was the worst biter I have trained and drew blood several times a day at first but is now the softest most playful of the lot and the one who always comes running up to say hello and ask for some play time when he is out and I enter the room. I stress this was done extremely gently With lector I resorted to biting him back, very gently on the back of the neck with my teeth and hissing at him. The look of shock on his face the first time I did it was quite something. Be very careful they don't get chance to bite you back on the face. If anyone wants to attack me for this then feel free. He was due to be killed in a truly awful way for being vicious when I rescued him. Had he not been trained out of biting he would have been destined for a life locked in a cage with only occasional play on his own. W. Wayne Gardner Dept. of Medical Physics Leeds Teaching Hospitals NHS Trust [log in to unmask] [Posted in FML issue 4394]