Thought this would not only be fun but also introduce people to breeds they may not be 100% familiar with.

I'll add links for info on the breed after the breed has been guessed.
How's it work?
I post an image and a small (
difficult 
)clue.
I'll add more clues and images each day if it's not guessed.
Any rules?
Only rule is...please
one guess per person, per post each day (gives other's a chance to join in).
~...~
I'm a rare and ancient breed, the first mention of me in a written document is believed to date back to 1062.
This is what I look like ....
What breed am I?
~...~
Cass.