<http://www.vwt.org.uk/docs/polecat/polecats-and-ferrets-how-to-tell-them-apart.pdf>

I am disappointed by the way they describe ferret pelage since what
they are calling descriptive of ferrets is often not and can be more
descriptive of neural crest genetic variations, and be warned that they
use dead specimens. Usually the Vincent Trust does better.

My eye is bad today so I may not check out that full link.

[Posted in FML 7874]