We currently are owned by 9 ferrets, and I believe that at one point or another they have all performed some sort of tail wagging/thumping. BUT, Snap is well known for her tail wagging. Just as you said Kyba gets in the tunnels and wags when you rub your hand along the outside, so does Snap. She's very fat too, so the tail thing is the most exercise she gets sometimes lol But she will take a step forward and wait for you to drag your hand across the top then wag her tail and take a step backwards...it's so weird and funny all at the same time. Our Lupi used to wag his tail a lot when he was a baby, but he's 5 yrs old now and is starting act like an old man. He still plays like he used to, just not as often. He's more of a cuddler now. Ann [Posted in FML issue 5086]