I stumbled upon this whole 'less adoptable' thing because I ended up with a big black dog and people started saying how great it was that I chose her since she would have been at the top of 'The List' at a shelter. I was shocked and looked into it; I've since (as I'm sure you've figured out by now) become crazy dog lady about less adoptable pets and big black dogs in particular.
I can't imagine life without Tonks. Of course she is a big black dog, so inherently more dangerous and aggressive. Can't you tell?