Some just are cuddlers.
 
The dental eruption stuff is in the James Fox vet texts _Biology and
Diseases of the Ferret_ (in both editions 1 and 2) and I think that
Bob Church has mentioned another source, as well.  What info do you
lack and want?  If I recall right Bob also mentioned things like incisor
variations that are missing in Fox books.  I think that his posts on
this can be found in both of these two archives:
 
http://listserv.cuny.edu/archives/ferret-search.html
and
http://fhl.sonic-weasel.org/
both of which are very well designed and very easy to use so just use
whichever one has the configuration you like best for this topic.
 
Roger, what a WONDERFUL post.  You got across so much and did it so
even-handedly.
[Posted in FML issue 4090]