From what I've always been told and hear a Cur dog (catahoula,bmc,etc) all comes from the same begin of the breed. Then as the breed got older people started redefining them and making them a more separate own breed. So basically catahoula and bmc are both Cur dogs and at once in time where the same breed.
And now I'm sure I just opened up a big old bag of worms and never gonna hear the end of it lol
LMAO