For the record I'll just mention again, Scratch is the nicest person in camp, and when the player character is under the influence of SwA (magic which doesn't affect the other creature in any way), Scratch passes Harkness.
As the confirmed furry in this conversation, please no!
Yes he passes the Harness Test, but no. Let's not romance something that is typically unable to pass the test. (Besides, we need dragon born and other anthro races to romance.). He is a feral dog and outside of SwA, he is a very normal feral dog. And even then his ability to consent is dubious. He is a good friend and I always have him in my camp, but he is only a friend.