The DNA of wolves and domestic dogs are so similar that nowadays Scientists refer to domestic dogs as Canis Lupus Familiaris - a sub-division of the gray wolf (Canis Lupus). Having said that, in terms of mitochondrial DNA, there is a minor but significant difference of 0.02% between wolves and domestic dogs, and the latest theories consider that domestic dogs and wolves have been recognisably separate for 12-16,000 years. Archeologists in the Kamchatka region of Siberia have found the remains of domesticated Laika (husky) type dogs dating back 10,000 years.

Mick

Finally, someone else who appreciates anatomical diagrams and science books.

Hopefully it will let me post the link
http://books.google.com/books?id=cta...page&q&f=false

The other 2 I've got on the go are:

Extinct Animals: an encyclopedia of species that have disappeared during Human history
There's some interesting animals in there, but on the canid/like front, there's the Falkland Island fox/wolf and the Tasmanian tiger/wolf. Think there's another couple in there as well.

That also has ilistrations, along with a list of book/websites/articles etc for further reading on each species. It also has in the introduction info on the 7 mass extinction events, we're in the 7th right now.
Unfortunately, it can be quite expensive to get hold of. I suggest if you want it, you try and get it used/second hand unless you don't mind paying. Ebook versions are also a lot cheaper.

Then there's
Beasts of Eden: walking whales, dawn horses and other enigmas of Mammal evolution
Haven't read very much of it but, its already referenced ancient canid like animals, lacks on the picture front but is still interesting non the less.

Does it say what species the other 0.02% belongs to?

Ok - my fault. Rephrase.

What point would a wolfdog become a dog (IYO)?