My little girl, Kira, wags her tail, too. She is the only ferret I've ever witnessed do this (although we've only had 3 others.) She only does it when she's running through the clear twenty foot tube we have. She gets about halfway through, stops & the tail starts turbo-wagging (super fast - it reminds me of hummingbird wings actually. So fast you almost can't see it - just a blur.) It is the cutest/funniest thing & never fails to make me LOL! Whenever she runs in the tube I say "Do it, do it!!" and then she wags! She is also a hisser - which she only does when the cats are chasing her & she's on a mission that they want to interrupt. And it DOES sound like "hee, hee, hee" laughing. God bless the fuzzbutts & all the hoomans that love them! Hugs & dooks to all - Jacci & Kira the wonder-fert [Posted in FML issue 5161]