I have never met a (non-littermate) twin to any of my dogs, but I came across these two pictures back in 2004 sometimes and thought they resembled her. Especially the first one, eventhough it isn't a good picture - Tango will probably look almost exactly like that when she's old:


^ That one is a Toller mix, and I think the other half was Australian Shepherd but I can't remember exactly.



^ This one doesn't resemble her that closely, but he does somewhat.

And then there is also her brother, Shadow:

^ They're the two behind everyone else, and Tango is closest to the camera.

I know I have a better picture of him somewhere, but I can't find it at the moment.