I'm like some of the others in regards to the two: I don't think
attention span has anything to do with memory in ferrets.  Mine have the
attention span of about 1/100th of a millisecond.  But memory?  That's
different all together.
 
For about two years we had our boat in slip E-7.  When returning from
walks all of the kids automatically turned onto our finger pier beside
the boat.  About 8 months ago we moved out to slip E-43.  Well, now
when we return from walks they all STILL want to turn in at E-7.  With
a little coaxing they will finally move on to our current slip.  Some
of them will even bound up the steps and jump over onto the boat.
 
(PS: When they jump I ALWAYS have them securely leashed so they don't
make a splashdown!!)
[Posted in FML issue 3850]