I did some surfing for info on plants poisonous to pets.  Here are a few
links.  Keep in mind these are plants known to be poisonous to humans or
(in most links) dogs/cats.
 
http://www.k9web.com/dog-faqs/medical/medical-info.02.html
 
http://www.aaarf.org/plants.htm
 
http://blankees.com/house/plants/index.htm
 
http://www.napcc.aspca.org/prevent.htm
 
http://www.cvm.uiuc.edu/ceps/petcolumns/poisonous_plants.html
 
http://www.science.siu.edu/plant-biology/ugent/news/ugent12.htm
 
Great database:
http://www.vet.purdue.edu/depts/addl/toxic/cover1.htm
 
List of top 20 common plants ingested by children:
http://www.kidsource.com/kidsource/content/Ingested.html
 
ad for book listing poisons, decent price:
http://members.aol.com/Mirror2001/guide.html
 
This link has a list of poisonous plants as well as a list of plants that
are SUPPOSEDLY safe.  (I did notice that it lists Aloe as safe, which is
listed as poisonous on other lists.  So I'd do some double-checking first!)
http://www.createagraphic.com/ghhs/plants.html
 
My own experience with herbal medicine in humans is that even things which
are safe can be very dangerous in large quantities--and a large quantity,
for a ferret, wouldn't be all that much.
 
- Megan (chironotavet!) & the furrykids
[Posted in FML issue 2456]