I have a Tower of Fun here at the shelter and I kid you not, if I were on a deserted island and could only pick one toy to have there for the ferrets - this would be what I'd take!! We've had as many as 6 ferrets chasing through it at once. Ours seem to climb up but then on the way down, they tuck their little legs back and Loooooge on the downhills. I have some who like to take their toys in the tube and others who find it very frustrating that they have to negotiate around a toy that's clearly not supposed to be there! And I have some who sleep in the tub - usually at about mid-height - sometimes pulling in a little blankie and sometimes not. I have had to coax new ferrets in. I usually scratch my fingers along the tube to get them to follow it or get another ferret to show them how it's done. I did have one ferret who would only go in it if I layed it on its side - she just didn't seem to like being up high. I really like that even the really big ferrets can enjoy this as the tube does not collapse around them as they squeeze in like if it were just a tunnel on the floor. Our Rating: All 4 PAWS!! Jerri Carel The Ferret Haven Louisville, KY [log in to unmask] www.theferrethaven.org [Posted in FML 6363]