We have had many blue heelers or blue heeler crosses, females, all of them
except this dog we have now. Mr. FH is vey good with dogs and we have had
some good heelers and some not-so-good heelers. The best dog we ever had
was a yellow dog, natural bob-tail, not sure what she was. They were notorious
in SE Montana. People called them the "Birrers Dogs" after the people who
raised them. She was the best. We still miss her.
Good luck with what you are striving to do. Hard to beat a good dog.