You are correct no one has said no other breed herds but they certainly
have said that BCs are more magical about doing the job.

Gwen

Magical because you can put a young BC who has never seen sheep and it will
know what to do. The use eye is usually something to behold. It doesn't mean I
would want to live with a BC the 23 hours out of the day that the dog isn't
herding. I hve seen a Rottie working sheep that gave me the same magical
feeling actually. Too much breed sensitivity here and I know it's because
Melanie is someone who has gotten religion in the last couple of years, but
there's not really anything wrong with passion.....except that she'll never
finish school.