Are Black Mouth Curs rare?

No, Black Mouth Curs are not considered rare in the regions where they are most commonly found, particularly in the southern United States, especially Mississippi, Alabama, Tennessee, Louisiana, and Texas. 

However, Black Mouth Curs may be less common in other parts of the country or internationally, where they are not as widely recognized or bred. In areas where the breed is less prevalent, finding a Black Mouth Cur to adopt may require a bit more effort and research.