Shadow is Welsh!
From Andy:
I think shadow is half border collie, half welsh collie! We met a welsh
collie at the beach today. Same size and leg length as shadow, same
coloring, similar fur length. The long legs are an adaptation for herding
cattle. Also some similar mannerisms. But the welsh collie doesn't do the
"stare down" that you use for sheep (or shadow uses on Blue). And the welsh
collie has floppy ears that won't stand up on their own. Shadow can keep his
ears up. Otherwise, they could be twins. The lady also had a border collie,
so it was easy to do a side by side comparison. The border was way more
focussed on fetching, which is typical of other border collies I've seen,
and it was also "normal" sized (maybe 6 inches shorter and 15 lbs lighter).