Yes, that is working. Whew! A lot learned this afternoon.
I've still got raccoons, bears, and what-have-you showing up in my "similars" on the coyote pages, but now I understand that if I put different Master Tags on those critters' image pages, they'll show up where I want 'em and go away where I don't want 'em.
This has been extremely helpful to me. I hope (and bet) it will help somebody else over this learning curve as well.
Again, thank you.